Design of thermoplastic vulcanizates induced by metal-ligand coordination towards enhanced mechanical properties and shape memory behavior

2020 ◽  
Vol 22 ◽  
pp. 100444
Author(s):  
Jiarong Huang ◽  
Zhou Gong ◽  
Tao Peng ◽  
Liming Cao ◽  
Yukun Chen
Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 807 ◽  
Author(s):  
Lin Xia ◽  
Han Gao ◽  
Weina Bi ◽  
Wenxin Fu ◽  
Guixue Qiu ◽  
...  

Shape memory composites of trans-1,4-polyisoprene (TPI) and low-density polyethylene (LDPE) with easily achievable transition temperatures were prepared by a simple physical blending method. Carbon black (CB) was introduced to improve the mechanical properties of the TPI/LDPE composites. The mechanical, cure, thermal and shape memory properties of the TPI/LDPE/CB composites were investigated in this study. In these composites, the crosslinked network generated in both the TPI and LDPE portions acted as a fixed domain, while the crystalline regions of the TPI and LDPE portions acted as a reversible domain in shape memory behavior. We found the mechanical properties of composites were promoted significantly with an increase of CB content, accompanied with the deterioration of shape memory properties of composites. When CB dosage was 5 parts per hundred of rubber composites (phr), best shape memory property of composites was obtained with a shape fixity ratio of 95.1% and a shape recovery ratio of 95.0%.


2020 ◽  
Vol 836 ◽  
pp. 155266
Author(s):  
Abhishek Pandey ◽  
Shahadat Hussain ◽  
Prasanth Nair ◽  
Rupa Dasgupta

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