Dynamic coordination of miscible polymer blends towards highly designable shape memory effect

POLYMER

卷:208

Article

Wang, Xiaodong¹  Lu, Haibao¹  Liu, Xuqing²  Hossain, Mokarram³  Fu, Yong Qing⁴  Xu, Ben Bin⁴ 

[1] Harbin Inst Technol, Sci & Technol Adv Composites Special Environm Lab, Harbin 150080, Peoples R China

[2] Univ Manchester, Sch Mat, Oxford Rd, Manchester M13 9PL, Lancs, England

[3] Swansea Univ, Coll Engn, Zienkiewicz Ctr Computat Engn, Swansea, W Glam, Wales

[4] Northumbria Univ, Fac Engn & Environm, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

关键词: Miscible polymer blends;    Shape memory effect;    Dynamic coordination;   

DOI  :  10.1016/j.polymer.2020.122946

来源: Elsevier

【 摘 要 】

Miscible polymer blends offer great designability on shape memory effect (SME) with adjustable mechanical properties and stimuli-responsiveness, by simply changing the constituent compositions. However, the thermodynamics understanding behind those SMEs on miscible polymer blends are yet to be explored. This paper describes an approach to achieve highly designable SMEs with adjustable glass transition temperature (T-g) and width of glass transition zone by dynamically coordinating components in miscible blends. An extended domain size model was formulated based on the Adam-Gibbs theory and Gaussian distribution theory to study the synergistic coordination of component heterogeneities on conformational entropy, glass transition and relaxation behavior of the miscible blend. The effectiveness of model was demonstrated by applying it to predict dual- and triple-SMEs in miscible polymer blends, where the theoretical results show good agreements with the experiment results. We expect this study provide an effective guidance on designing advanced miscible polymer blends based on the SME.

【 授权许可】

Free