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Article

Reinforcement of Refined and Semi-Refined Carrageenan Film with Nanocellulose

1
Institute for Sustainable Industries and Liveable Cities, Victoria University, PO Box 14428, Melbourne 8001, Australia
2
Agency for Marine and Fisheries Research and Development, Republic of Indonesia. Jl. Pasir Putih II, Ancol Timur, Jakarta Utara 14430, Indonesia
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(5), 1145; https://doi.org/10.3390/polym12051145
Received: 15 April 2020 / Revised: 12 May 2020 / Accepted: 14 May 2020 / Published: 17 May 2020
(This article belongs to the Special Issue Natural Compounds for Natural Polymers II)
Carrageenans obtained from seaweeds can be processed into films for a range of applications including food packaging. The level of carrageenan refinement during extraction can influence the key properties, with semi-refined carrageenan (SRC) containing more impurities than the more refined carrageenan (RC). Further refinement steps, however, result in higher costs associated with the production of RC. In order to obtain a lower cost and more ecofriendly, bio-based material for food packaging applications, SRC was used in this investigation to produce a thin film reinforced with nanocellulose fibrils (NCF). Films derived from RC containing NCF were also investigated with water sensitivity and physico-mechanical and thermal properties among the properties tested. Levels of NCF were varied from 1% to 7% (w/w), and in general, the NCF reinforcement improved the overall properties of both the SRC and RC films, including the water sensitivity and moisture barrier. However, NCF inclusion in SRC film was less effective with regard to the mechanical and thermal properties compared with NCF inclusion in RC film. The enhancement in properties was attributed to the greater cohesiveness of the reinforced polymer structure and the crystalline regions formed in the structures of SRC and RC films by NCF incorporation. View Full-Text
Keywords: κ-carrageenan; nanocellulose fibrils; semi-refined carrageenan; biopolymer film κ-carrageenan; nanocellulose fibrils; semi-refined carrageenan; biopolymer film
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MDPI and ACS Style

Sedayu, B.B.; Cran, M.J.; Bigger, S.W. Reinforcement of Refined and Semi-Refined Carrageenan Film with Nanocellulose. Polymers 2020, 12, 1145. https://doi.org/10.3390/polym12051145

AMA Style

Sedayu BB, Cran MJ, Bigger SW. Reinforcement of Refined and Semi-Refined Carrageenan Film with Nanocellulose. Polymers. 2020; 12(5):1145. https://doi.org/10.3390/polym12051145

Chicago/Turabian Style

Sedayu, Bakti B., Marlene J. Cran, and Stephen W. Bigger. 2020. "Reinforcement of Refined and Semi-Refined Carrageenan Film with Nanocellulose" Polymers 12, no. 5: 1145. https://doi.org/10.3390/polym12051145

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