Journal
CARBOHYDRATE POLYMERS
Volume 141, Issue -, Pages 143-150Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.01.006
Keywords
Cellulose nanocrystals; Atom transfer radical polymerization (ATRP); Thermoplastic elastomers
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Funding
- Fundamental Research Funds for the Central Non-profit Research Institution of CAF [CAFYBB2016ZD007]
- National Natural Science Foundation of China [31200447, 31570579]
- Natural Science Foundation of Jiangsu Province [BK20131070]
- lecture and study program for outstanding scholars from home and abroad [CAFYBB2011007]
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Recently, the utilization of cellulose nanocrystals (CNCs) as a reinforcing material has received a great attention due to its high elastic modulus. In this article, a novel strategy for the synthesis of self-reinforced CNCs based thermoplastic elastomers (CTPEs) is presented. CNCs were first surface functionalized with an initiator for surface-initiated atom transfer radical polymerization (SI-ATRP). Subsequently, SI-ATRP of methyl methacrylate (MMA) and butyl acrylate (BA) was carried out in the presence of sacrificial initiator to form CTPEs in situ. The CTPEs together with the simple blends of CNCs and linear poly(MMA-co-BA) copolymer (P(MMA-co-BA)) were characterized for comparative study. The results indicated that P(MMA-co-BA) was successfully grafted onto the surface of CNCs and the compatibility between CNCs and the polymer matrix in CTPEs was greatly enhanced. Specially, the CTPEs containing 2.15 wt% CNCs increased T-g by 19.2 degrees C and tensile strength by 100% as compared to the linear P(MMA-co-BA). (C) 2016 Elsevier Ltd. All rights reserved.
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