期刊
CARBOHYDRATE POLYMERS
卷 95, 期 1, 页码 428-433出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.03.014
关键词
Core-shell latex; Biocomposite; Reinforcement; CTMP; Toughening
资金
- Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology [2012Z04]
- Scientific Research Foundation of Guangxi University [GXZ090126]
- NSERC Strategic Network - Innovative Green Wood Fiber Product (Canada)
The toughening of cellulose fiber reinforced polypropylene (PP) was performed via adsorbing the cationic latex with core-shell structure onto chemithermomechanical pulp (CTMP) fibers as reinforcements, which is a novel approach for rendering the surface of cellulose fibers elastomeric. The mechanical, morphological and thermal properties of the resulting biocomposites, containing 40% (wt) of the modified fibers, were investigated. The results showed that with the increasing of the latex dosage up to 2% (wt on dry CTMP fibers), the impact, tensile and flexural strengths of the modified CTMP/PP biocomposites were significantly increased. The toughening mechanism was discussed based on the retarding of crack propagation and the promoting of crystallization of PP matrix (as revealed by DSC characterization). The overall performance of the biocomposite demonstrated that cationic latex-modified CTMP fiber is very effective in reinforcing thermoplastic-based biocomposites along with the synergetic effect on enhancing crystallinity of polymer matrix. (c) 2013 Elsevier Ltd. All rights reserved.
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