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UV‐Absorbent Lignin‐Based Multi‐Arm Star Thermoplastic Elastomers
Author(s) -
Yu Juan,
Wang Jifu,
Wang Chunpeng,
Liu Yupeng,
Xu Yuzhi,
Tang Chuanbing,
Chu Fuxiang
Publication year - 2015
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201400663
Subject(s) - copolymer , materials science , lignin , thermoplastic elastomer , monomer , methyl methacrylate , polymer chemistry , elastomer , atom transfer radical polymerization , thermoplastic , acrylate , grafting , polymer , composite material , chemistry , organic chemistry
Lignin‐grafted copolymers, namely lignin‐ graft ‐poly(methyl methacrylate‐ co ‐butyl acrylate) (lignin‐ g ‐P(MMA‐ co ‐BA)), are synthesized via “grafting from” atom transfer radical polymerization (ATRP) with the aid of lignin‐based macroinitiators. By manipulating the monomer feed ratios of MMA/BA, grafted copolymers with tunable glass transition temperatures (−10–40 °C) are obtained. These copolymers are evaluated as sustainable thermoplastic elastomers (TPEs). The results suggest that the mechanical properties of these TPEs lignin‐ g ‐P(MMA‐ co ‐BA) copolymers are improved significantly by comparing with those of linear P(MMA‐ co ‐BA) copolymer counterparts, and the elastic strain recovery is nearly 70%. Lignin‐ g ‐P(MMA‐ co ‐BA) copolymers exhibit high absorption in the range of the UV spectrum, which might allow for applications in UV‐blocking coatings.