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Polymers 2018, 10(11), 1236; https://doi.org/10.3390/polym10111236

Reinforcement of Castor Oil-Based Polyurethane with Surface Modification of Attapulgite

1
School of Materials Science and Engineering, Yancheng 224051, China
2
You Pei College, Yancheng Institute of Technology, Yancheng 224051, China
3
Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA 92521, USA
4
Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
*
Authors to whom correspondence should be addressed.
Received: 29 September 2018 / Revised: 4 November 2018 / Accepted: 5 November 2018 / Published: 7 November 2018
(This article belongs to the Special Issue Recent Advances in Bioplastics)
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Abstract

Polyurethane/attapulgite (PU/ATT) nanocomposites derived from castor oil were prepared by incorporation of 8 wt % ATT, acid-treated ATT, and KH560-treated ATT. The effects of three ATTs (ATT, acid-ATT, and KH560-ATT) on the comprehensive properties of PU/ATT nanocomposites were systematically investigated. The results showed that the incorporation of 8 wt % of three ATTs could produce an obvious reinforcement on the castor oil-based PU and that the silane modification treatment, rather than the acid treatment, has the more effective reinforcement effect. SEM images revealed the uniform dispersion of ATT in the PU matrix. DMA confirmed that the storage modulus and glass transition temperature (Tg) of PU/ATT nanocomposites were significantly increased after blending with different ATTs. For PU/KH560-ATT8 nanocomposites, the thermal stability of the PU was obviously enhanced by the addition of KH560-ATT. In particular, 8 wt % KH560-ATT loaded castor oil-based PU nanocomposites exhibit an obvious improvement in tensile strength (255%), Young’s modulus (200%), Tg (5.1 °C), the storage modulus at 25 °C (104%), and the initial decomposition temperature (7.7 °C). The prepared bio-based PU materials could be a potential candidate to replace petroleum-based PU products in practical applications. View Full-Text
Keywords: polyurethane; castor oil; attapulgite; nanocomposites; reinforcement polyurethane; castor oil; attapulgite; nanocomposites; reinforcement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wang, C.; Dai, L.; Yang, Z.; Ge, C.; Li, S.; He, M.; Ding, L.; Xie, H. Reinforcement of Castor Oil-Based Polyurethane with Surface Modification of Attapulgite. Polymers 2018, 10, 1236.

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