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189 Results Found

  • Article
  • Open Access
2,110 Views
11 Pages

Study on Phenol–Formaldehyde Resin–Montmorillonite Impregnation and Compression Modification of Chinese Fir

  • Lei He,
  • Qian Zhang,
  • Bengang Zhang,
  • Hongyun Qiu,
  • Jie Guo,
  • Fengwen Sun,
  • Zengfu Jiang and
  • Weidong Zhou

12 May 2024

In this study, a phenol–formaldehyde resin–montmorillonite intercalation composite solution was used as a modifier to treat Chinese fir via impregnation and compression. The basic characteristics and wettability of the PF (phenol–fo...

  • Article
  • Open Access
20 Citations
2,946 Views
21 Pages

30 August 2022

Fast-growing poplar with low wood density has been generally regarded as a low-grade wood species and cannot be used as a building material due to its poor fire resistance. As the fire resistance of wood materials is positively correlated with densit...

  • Article
  • Open Access
8 Citations
3,466 Views
12 Pages

31 July 2022

Wood permeability and compressibility are affected by cell wall structure and chemical composition. These properties can be improved by appropriate wood pretreatments. Low-density poplar wood was converted to a more dense structure by the following s...

  • Article
  • Open Access
12 Citations
2,726 Views
18 Pages

28 December 2021

The impregnation of lightweight aggregate (LWA) is an alternative method to its pre-moistening, which is used to limit the loss of fresh concrete workability due to the aggregate’s ability to absorb a great amount of mixing water. The aim of th...

  • Article
  • Open Access
7 Citations
2,734 Views
14 Pages

Enhancing Water Resistance in Foam Cement through MTES-Based Aerogel Impregnation

  • Zhi Li,
  • Shengjie Yao,
  • Guichao Wang,
  • Xi Deng,
  • Fang Zhou,
  • Xiaoxu Wu and
  • Qiong Liu

1 February 2024

The propensity of foamed concrete to absorb water results in a consequential degradation of its performance attributes. Addressing this issue, the integration of aerogels presents a viable solution; however, their direct incorporation has been observ...

  • Article
  • Open Access
11 Citations
1,788 Views
20 Pages

Moisture and Temperature Profiles of Heartwood Pinus pinaster Ait. Wood Specimens during Microwave Drying

  • Fernando Júnior Resende Mascarenhas,
  • Rogério Manuel dos Santos Simões,
  • Alfredo Manuel Pereira Geraldes Dias,
  • André Luis Christoforo and
  • André Eduardo Palos Cunha

30 May 2024

Microwave (MW) drying of wood has gained popularity in the field of wood modification. The rise in temperature during MW drying leads to increased steam pressure, enhancing wood permeability but potentially decreasing mechanical properties. Understan...

  • Article
  • Open Access
5 Citations
2,606 Views
20 Pages

Influence of Impregnation of Recycled Concrete Aggregate on the Selected Properties of Concrete

  • Roman Jaskulski,
  • Pavel Reiterman,
  • Wojciech Kubissa and
  • Yaroslav Yakymechko

17 August 2021

The paper focuses on investigating the effect of impregnation of recycled concrete aggregate on the mechanical and durability properties of concrete using this aggregate. Cement paste, limewater and diluted water glass were used to impregnate the agg...

  • Article
  • Open Access
26 Citations
3,890 Views
22 Pages

26 October 2021

One of the biggest technological problems connected with the production of lightweight concretes made of porous aggregates is their much higher water absorption, which may cause on the one hand workability loss, and on the other hand excess water con...

  • Article
  • Open Access
4 Citations
2,450 Views
14 Pages

15 August 2021

Recently, the surfaces of concrete structures are impregnated to protect them against the environment in order to increase their durability. It is still not known how the use of these agents affects the near-surface hardness of concrete. This is espe...

  • Article
  • Open Access
76 Citations
12,526 Views
13 Pages

3D Printing Custom Bioactive and Absorbable Surgical Screws, Pins, and Bone Plates for Localized Drug Delivery

  • Karthik Tappa,
  • Udayabhanu Jammalamadaka,
  • Jeffery A. Weisman,
  • David H. Ballard,
  • Dallas D. Wolford,
  • Cecilia Pascual-Garrido,
  • Larry M. Wolford,
  • Pamela K. Woodard and
  • David K. Mills

Additive manufacturing has great potential for personalized medicine in osseous fixation surgery, including maxillofacial and orthopedic applications. The purpose of this study was to demonstrate 3D printing methods for the fabrication of patient-spe...

  • Article
  • Open Access
2,914 Views
29 Pages

4 February 2025

The aim of this research was to examine the effect of water-based hydrophobic impregnations on concrete in order to improve its durability, chemical resistance, and physical–mechanical parameters. The purpose of this research was to prevent as...

  • Article
  • Open Access
16 Citations
4,045 Views
14 Pages

15 February 2022

The performance and durability of proton exchange fuel cells (PEMFCs) are greatly affected by the bipolar plate (BP). In this paper, the thermal and electrical conductivities and mechanical property of graphite filled with resin composite BPs were co...

  • Article
  • Open Access
3 Citations
1,862 Views
16 Pages

Hot Compression of Calcium Chloride and Sodium Carbonate Modifies Wood for Tsoongiodendron odorum

  • Ying Huang,
  • Meiling Chen,
  • Jinhang Zhou,
  • Yunlin Fu and
  • Penglian Wei

28 December 2023

To enhance the density and properties of Tsoongiodendron odorum and expand its range of applications, the physical and mechanical characteristics, such as density and hardness, were investigated after impregnating a solution of sodium carbonate and c...

  • Article
  • Open Access
2 Citations
1,947 Views
17 Pages

9 April 2023

The paper presents the results of tests on concrete with recycled aggregate impregnated with the use of citric acid. Impregnation was carried out in two stages, with a suspension of calcium hydroxide in water (so-called milk of lime) or diluted water...

  • Article
  • Open Access
7 Citations
2,707 Views
14 Pages

Effect of Impregnation with Natural Shellac Polymer on the Mechanical Properties of Fast-Growing Chinese Fir

  • Qinzhi Zeng,
  • Xiya Yu,
  • Nianfeng Wei,
  • Zhiyong Wu,
  • Qisong Liu,
  • Nairong Chen and
  • Weigang Zhao

16 September 2022

Fast-growing Chinese fir wood has shortfalls such as loose structure and low strength because it grows faster than natural trees. Resin impregnation is a great way to increase the strength of fast-growing fir. However, the resin used for impregnation...

  • Article
  • Open Access
62 Citations
9,408 Views
18 Pages

Effect of Polymer Infiltration on the Flexural Behavior of β-Tricalcium Phosphate Robocast Scaffolds

  • Francisco J. Martínez-Vázquez,
  • Antonia Pajares,
  • Fernando Guiberteau and
  • Pedro Miranda

21 May 2014

The influence of polymer infiltration on the flexural strength and toughness of β-tricalcium phosphate (β-TCP) scaffolds fabricated by robocasting (direct-write assembly) is analyzed. Porous structures consisting of a tetragonal three-dimensional lat...

  • Article
  • Open Access
16 Citations
2,543 Views
7 Pages

16 July 2022

Acetylation with acetic anhydride is well known to improve the dimensional stability and durability of wood. Veneer is appealing for acetylation because of its thin thickness, which supports a complete and even impregnation of difficult-to-treat wood...

  • Article
  • Open Access
2 Citations
1,941 Views
28 Pages

30 July 2024

This study evaluates multimodal imaging for characterizing microstructures in partially impregnated thermoplastic matrix composites made of woven glass fiber and polypropylene. The research quantifies the impregnation degree of fiber bundles within c...

  • Article
  • Open Access
10 Citations
2,375 Views
14 Pages

The Impact of Microorganisms on the Performance of Linseed Oil and Tung Tree Oil Impregnated Composites Made of Hemp Shives and Corn Starch

  • Dovilė Vasiliauskienė,
  • Giedrius Balčiūnas,
  • Renata Boris,
  • Agnė Kairytė and
  • Jaunius Urbonavičius

In this study, the performance characteristics of hemp shives impregnated with linseed oil and tung tree oil (HS)- and corn starch (CS)-based biocomposites containing flame retardants were evaluated before and after treatment with the mixture of bact...

  • Article
  • Open Access
2 Citations
4,852 Views
42 Pages

Edge Race-Tracking during Film-Sealed Compression Resin Transfer Molding

  • Mario Vollmer,
  • Swen Zaremba,
  • Pierre Mertiny and
  • Klaus Drechsler

Edge race-tracking is a frequently reported issue during resin transfer molding. It is caused by highly permeable channels and areas between the preform edge and cavity, which can significantly change the preform impregnation pattern. To date, inform...

  • Article
  • Open Access
3 Citations
4,192 Views
16 Pages

High-Performance Cladophora-Algae-Based Paper for Honeycomb Core in Sandwich-Structured Composite: Preparation and Characterizations

  • Yati Mardiyati,
  • Anna Niska Fauza,
  • Steven Steven,
  • Onny Aulia Rachman,
  • Tatacipta Dirgantara and
  • Arief Hariyanto

9 March 2023

Cellulose is classified as one of the most abundant biopolymers in nature. Its excellent properties have gained a lot of interest as an alternative material for synthetic polymers. Nowadays, cellulose can be processed into numerous derivative product...

  • Article
  • Open Access
7 Citations
2,506 Views
13 Pages

Fabrication of PVA–Silica Sol Wood Composites via Delignification and Freezing Pretreatment

  • Rizheng Cong,
  • Taoyang Cai,
  • Shangjie Ge-Zhang,
  • Hong Yang and
  • Chang Zhang

8 July 2024

The efficient exploitation of planted fast-growing wood is crucial for enhancing wood resource utilization. In this study, the fast-growing poplar wood was modified by in situ impregnation through vacuum impregnation with polyvinyl alcohol and nano-s...

  • Article
  • Open Access
903 Views
26 Pages

9 September 2025

Cement-based materials are reliable materials that guarantee high efficiency and high performance and are one of the important materials for the civil engineering industries. It is an era in which carbon neutrality and energy efficiency are emphasize...

  • Article
  • Open Access
34 Citations
3,669 Views
17 Pages

22 October 2020

Polyurethane (PUR) foams reinforced with 2 wt.% hemp shives (HS) fillers were successfully synthesized. Three different types of HS fillers were evaluated—non-treated HS, HS impregnated with sunflower oil (SO) and HS impregnated with tung oil (...

  • Article
  • Open Access
2 Citations
2,547 Views
20 Pages

Physico-Mechanical and Energy Properties of Pine (Pinus sylvestris) and Beech (Fagus sylvatica) Wood from Railroad Ties

  • Monika Aniszewska,
  • Arkadiusz Gendek,
  • Barbora Tamelová,
  • Jan Malaťák,
  • Jan Velebil,
  • Jozef Krilek,
  • Iveta Čabalová,
  • Ireneusz Mikłaszewicz,
  • Witold Zychowicz and
  • Andrzej Mazurek
  • + 1 author

5 March 2024

The objective of the present work was to determine the physico-mechanical and energy properties of pine (Pinus sylvestris) and beech (Fagus sylvatica) wood from railroad ties. The ties were divided into internal and external parts as well as into par...

  • Article
  • Open Access
325 Views
14 Pages

Characterization of the Biodeterioration Caused by the Fungus Serpula lacrymans in Lignocellulosic Materials of Building Envelopes

  • Rodrigo Espinoza Maldonado,
  • Carlos Rubio-Bellido,
  • Ariel Bobadilla-Moreno,
  • José Navarrete and
  • Paula Herrera

13 December 2025

Serpula lacrymans is considered the most aggressive and harmful brown-rot fungus for wooden buildings worldwide, and it has led to substantial economic losses due to the deterioration of wood and wooden-base structures. This study aims to connect the...

  • Article
  • Open Access
6 Citations
2,270 Views
10 Pages

18 October 2021

In this study, the dimensional stability and mechanical properties of plywood made from untreated and plasma-pretreated beech veneers were compared. The wood veneers used (native and thermally modified) were impregnated with melamine resin in a simpl...

  • Article
  • Open Access
3 Citations
3,103 Views
23 Pages

5 June 2021

Research on the effective use of secondary products is gaining more and more importance in Poland due to the intensively implementing idea of the circular economy. The solution used in this work are one of many tests useful in construction. The subje...

  • Article
  • Open Access
12 Citations
3,219 Views
17 Pages

The goal of cartilage tissue engineering (CTE) is to regenerate new hyaline cartilage in joints and treat osteoarthritis (OA) using cell-impregnated hydrogel constructs. However, the production of an extracellular matrix (ECM) made of fibrocartilage...

  • Article
  • Open Access
14 Citations
3,024 Views
17 Pages

Effect of Composite Impregnation on Properties of Recycled Coarse Aggregate and Recycled Aggregate Concrete

  • Chuheng Zhong,
  • Peng Tian,
  • Yuhua Long,
  • Jinzhi Zhou,
  • Kun Peng and
  • Chengxin Yuan

To improve the properties of recycled aggregate concrete, single and composite impregnation treatments were carried out on recycled coarse aggregates with sodium silicate solution, silane slurry, and polyvinyl alcohol solution. The effects of the thr...

  • Article
  • Open Access
24 Citations
3,859 Views
17 Pages

PCL/Mesoglycan Devices Obtained by Supercritical Foaming and Impregnation

  • Paola Franco,
  • Raffaella Belvedere,
  • Emanuela Pessolano,
  • Sara Liparoti,
  • Roberto Pantani,
  • Antonello Petrella and
  • Iolanda De Marco

In this work, a one-shot process for the simultaneous foaming of polycaprolactone (PCL) and impregnation of mesoglycan (MSG) into the porous structure was successfully attempted. Supercritical carbon dioxide plays the role of the foaming agent with r...

  • Article
  • Open Access
16 Citations
2,754 Views
21 Pages

29 April 2020

The research hypothesis states that the impregnation of the honeycomb paper core of lightweight sandwich panels with modified starch, sodium silicate and epoxy resin (LiquidWood®) resin has a significant effect on its elastic properties. In this...

  • Article
  • Open Access
8 Citations
3,079 Views
14 Pages

Effect of Sodium Hydroxide, Succinic Acid and Their Combination on Densified Wood Properties

  • Sarah Augustina,
  • Imam Wahyudi,
  • Wahyu Dwianto and
  • Teguh Darmawan

11 February 2022

The effect of NaOH, succinic acid and their combination used as pretreatments on selected properties of densified wood samples of pisang putih (Mezzettia spp.), nyatoh (Palaquium spp.) and sepetir (Sindora spp.) has been studied. The properties of th...

  • Article
  • Open Access
255 Views
25 Pages

29 December 2025

This research investigated the impact of using lecithin and casein on lignocellulosic fiberboards on their characteristics and properties, including fire resistance. The six experimental variants created included: (1) unmodified reference fiberboards...

  • Article
  • Open Access
28 Citations
4,669 Views
14 Pages

Effect of Content and Surface Modification of Fique Fibers on the Properties of a Low-Density Polyethylene (LDPE)-Al/Fique Composite

  • Mario Fernando Muñoz-Vélez,
  • Miguel Angel Hidalgo-Salazar and
  • Jose Herminsul Mina-Hernández

20 September 2018

This work presents the physical-thermal and mechanical characterization of a low-density polyethylene (LDPE)-Al matrix composite material that was obtained from reinforcing recycled (post-consumer) long-life Tetra Pak packages with fique natural fibe...

  • Article
  • Open Access
2 Citations
2,761 Views
12 Pages

Effect of Paraffin Impregnation Modification on Bamboo Properties and Microstructure

  • Lei Huang,
  • Weijie Gu,
  • Feng Lin,
  • Yixuan Zheng,
  • Weigang Zhang,
  • Zhongqing Ma,
  • Minzhen Bao and
  • Yanjun Li

5 June 2023

Phase-change energy-storage paraffin regulates the thermal management of buildings, and the material can regulate room temperature as it absorbs and discharges heat. As a porous adsorbent material, bamboo has high permeability. The aim of this study...

  • Article
  • Open Access
11 Citations
3,343 Views
17 Pages

Structure, Thermal, and Mechanical Behavior of the Polysulfone Solution Impregnated Unidirectional Carbon Fiber Yarns

  • Dilyus I. Chukov,
  • Victor V. Tcherdyntsev,
  • Andrey A. Stepashkin and
  • Mikhail Y. Zadorozhnyy

2 December 2023

The paper is devoted to the study of thermal and mechanical behavior and structural features of the polysulfone solution impregnated unidirectional carbon fiber yarns depending on fabrication conditions and appearance for optimum production method of...

  • Article
  • Open Access
20 Citations
5,009 Views
15 Pages

Thermal and Mechanical Analysis of Polyethylene Homo-Composites Processed by Rotational Molding

  • Antonio Greco,
  • Francesca Ferrari,
  • Maria Grazia Buccoliero and
  • Greta Trono

20 March 2019

This work is aimed at studying the suitability of ultra-high molecular weight polyethylene (UHMWPE) fibers for the production of polyethylene homo-composites processed by rotational molding. Initially pre-impregnated bars were produced by co-extrusio...

  • Article
  • Open Access
5 Citations
2,871 Views
23 Pages

The Effect of Textile Structure Reinforcement on Polymer Composite Material Mechanical Behavior

  • Svetlana Risteska,
  • Vineta Srebrenkoska,
  • Silvana Zhezhova,
  • Sara Srebrenkoska,
  • Sanja Risteski,
  • Sonja Jordeva and
  • Saska Golomeova Longurova

13 December 2024

Investigating the impact of textile structure reinforcement on the mechanical characteristics of polymer composites produced by the compression molding technique was the goal of this work. An epoxy resin system served as the matrix, and various woven...

  • Article
  • Open Access
17 Citations
4,556 Views
18 Pages

Effect of Impregnation with Maltodextrin and 1,3-Dimethylol-4,5-Dihydroxyethyleneurea on Poplar Wood

  • Mingzhen Cai,
  • Zongying Fu,
  • Yingchun Cai,
  • Zhengdong Li,
  • Can Xu,
  • Cong Xu and
  • Shuai Li

28 October 2018

Modification of poplar (Populus adenopoda Maxim) wood by using maltodextrin (MA) combined with 1,3-dimethylol-4,5-dihydroxyethyleneurea (DM) resin was investigated in this study. The weight percent gain, dimensional stability, mechanical strength, an...

  • Article
  • Open Access
16 Citations
3,163 Views
18 Pages

23 July 2020

To complement the shortcomings of concrete surface treatment technology and improve the durability of concrete structure, the purpose of this study was to impregnate water-repellent performance into natural zeolite, which has many pores inside, to ac...

  • Article
  • Open Access
14 Citations
4,294 Views
15 Pages

Green Flexible Polyurethane Foam as a Potent Support for Fe-Si Adsorbent

  • Afiqah Ahmad,
  • Siti Nurul Ain Md. Jamil,
  • Thomas Shean Yaw Choong,
  • Abdul Halim Abdullah,
  • Mohd Sufri Mastuli,
  • Nurhanisah Othman and
  • NurNazurah Jiman

4 December 2019

This paper describes the preparation, characterisation, and potential application of flexible palm oil-based polyurethane foam (PUF) as a support for iron-silica (Fe-Si) adsorbent. Fe-Si/polyurethane composite (Fe-Si/PUC) was prepared by impregnating...

  • Article
  • Open Access
55 Citations
5,961 Views
11 Pages

19 August 2019

Interfacial interaction is one of the most important factors that affect the mechanical properties of the fiber reinforced composites. The effect of fabrics′ sizing removal from glass fibers’ surface by thermal treatment on the mechanical...

  • Article
  • Open Access
21 Citations
4,606 Views
19 Pages

In Vitro Evaluation of Calcium Phosphate Bone Cement Composite Hydrogel Beads of Cross-Linked Gelatin-Alginate with Gentamicin-Impregnated Porous Scaffold

  • Shih-Ming Liu,
  • Wen-Cheng Chen,
  • Chia-Ling Ko,
  • Hsu-Ting Chang,
  • Ya-Shun Chen,
  • Ssu-Meng Haung,
  • Kai-Chi Chang and
  • Jian-Chih Chen

29 September 2021

Calcium phosphate bone cement (CPC) is in the form of a paste, and its special advantage is that it can repair small and complex bone defects. In the case of open wounds, tissue debridement is necessary before tissue repair and the subsequent control...

  • Article
  • Open Access
3,049 Views
16 Pages

17 April 2023

As an energy-saving and efficient composites-forming technology, the properties of carbon fiber self-resistance electric (SRE) heating technology still need to be improved, which is not conducive to the popularization and application of this technolo...

  • Article
  • Open Access
8 Citations
2,763 Views
12 Pages

Development of Porous Polyvinyl Acetate/Polypyrrole/Gallic Acid Scaffolds Using Supercritical CO2 as Tissue Regenerative Agents

  • Diego Valor,
  • Antonio Montes,
  • Antonio Cózar,
  • Clara Pereyra and
  • Enrique Martínez de la Ossa

10 February 2022

Scaffolds are advanced devices employed in tissue engineering, as they are intended to mimic the characteristics of extracellular matrices. In this respect, conjugated materials are gaining relevance in the manufacturing of the foams used for therape...

  • Article
  • Open Access
9 Citations
3,180 Views
13 Pages

Quebracho-Based Wood Preservatives: Effect of Concentration and Hardener on Timber Properties

  • Emanuele Cesprini,
  • Riccardo Baccini,
  • Tiziana Urso,
  • Michela Zanetti and
  • Gianluca Tondi

21 April 2022

Tannin polyphenols are produced by plants to protect themselves against natural decay. It is expected that impregnating low-durable timber with tannin extracts of more durable species such as quebracho (Schinopsis balansae) will enhance the durabilit...

  • Feature Paper
  • Article
  • Open Access
11 Citations
2,449 Views
15 Pages

Production of Mesoglycan/PCL Based Composites through Supercritical Impregnation

  • Sara Liparoti,
  • Stefania Mottola,
  • Gianluca Viscusi,
  • Raffaella Belvedere,
  • Antonello Petrella,
  • Giuliana Gorrasi,
  • Roberto Pantani and
  • Iolanda De Marco

7 September 2022

The development of targeted therapies for wound repair is knowing a growing interest due to the increasing aging of the population and the incidence of chronic pathologies, mainly pressure ulcers. Among molecules recruiting cell populations and promo...

  • Article
  • Open Access
1 Citations
2,644 Views
16 Pages

Wood-Poly(furfuryl Alcohol) Prepreg: A Novel, Ecofriendly Laminate Composite

  • Andrey Pereira Acosta,
  • Bruno Esteves,
  • Joziel Aparecido da Cruz,
  • Arthur Behenck Aramburu,
  • Agnė Kairytė,
  • Sylwia Członka,
  • Dionatan Orestes Ramos,
  • Matheus de Paula Goularte,
  • Rafael de Avila Delucis and
  • Sandro Campos Amico
  • + 1 author

15 September 2023

Prepregs are commonly fabricated with non-renewable petroleum-based materials. To reduce the impact of the manufacturing of these materials and to produce more sustainable prepregs, this research aims to manufacture poly(furfuryl alcohol)/wood veneer...

  • Article
  • Open Access
2 Citations
2,847 Views
20 Pages

Evaluation of Healing in Concretes with Chemical and Bacterial Solutions Exposed to Aggressive Chloride and Carbon Dioxide-Rich Environments

  • Fernanda Pacheco,
  • Hinoel Zamis Ehrenbring,
  • Roberto Christ,
  • Rodrigo Périco de Souza,
  • Regina Celia Espinosa Modolo,
  • Victor Hugo Valiatio,
  • Bernardo Fonseca Tutikian and
  • Zemei Wu

11 December 2024

This paper aimed to evaluate two self-healing mechanisms of concrete exposed to chloride ions and carbon dioxide environments using chemical and bacterial solutions, contributing to understanding the real scenarios of concrete structures application....

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