Function extension of dual-mechanochromism of acylated hydroxypropyl cellulose/synthetic polymer composites achieved by moderate compatibility as well as hydrogen bonding

POLYMER

卷:174

Article

Miyagi, Kazuma¹  Teramoto, Yoshikuni^1,2,3,4 

[1] Gifu Univ, United Grad Sch Agr Sci, 1-1 Yanagido, Gifu 5011193, Japan

[2] Gifu Univ, Fac Appl Biol Sci, Dept Appl Life Sci, 1-1 Yanagido, Gifu 5011193, Japan

[3] Gifu Univ, Ctr Highly Adv Integrat Nano & Life Sci G CHAIN, 1-1 Yanagido, Gifu 5011193, Japan

[4] Gifu Univ, GU Composites Ctr, 1-1 Yanagido, Gifu 5011193, Japan

关键词: Mechanochromism;    Cholesteric liquid crystal;    Cellulose derivatives;   

DOI  :  10.1016/j.polymer.2019.04.067

来源: Elsevier

【 摘 要 】

We accomplished controlling mechanochromic properties of propionylated hydroxypropyl cellulose (PHPC)/synthetic polymer cholesteric liquid crystalline (ChLC) composites by combining PHPC bearing residual hydroxyl groups with various synthetic polymers. The presence of hydroxyl groups contributed to the effective immoibilization of ChLC structure in the composites by allowing the moderate compatibility as well as hydrogen bonding between PHPC and diverse synthetic polymers. The obtained composite films exhibited not only wide-ranging color change but also circular dichroic inversion by applying the compressive stress. A recovery of the color and circular dichroism was realized through post thermal treatments. A level of the stress and temperature for expressing these properties was successfully manipulated by varying combined synthetic polymers. Hence, our present work can give a designing guideline for the cellulose-based mechanochromic materials with extensive physical properties.

【 授权许可】

Free