1. Thermo-Responsive Shape Memory Effect and Conversion of Porous Structure in a Polyvinyl Chloride Foam
- Author
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Tao Xi Wang, Xing Shen, Yun Hui Geng, and Lu Lu Chang
- Subjects
Materials science ,Polymers and Plastics ,Thermosetting polymer ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Article ,lcsh:QD241-441 ,chemistry.chemical_compound ,lcsh:Organic chemistry ,Recovery performance ,Composite material ,Porosity ,Thermo responsive ,porous structure ,Strain (chemistry) ,Transition temperature ,General Chemistry ,Shape-memory alloy ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Polyvinyl chloride ,chemistry ,thermoset foam ,polyvinyl chloride ,shape memory effect ,0210 nano-technology - Abstract
In this paper, a thermo-responsive shape memory effect in a polyvinyl chloride thermoset foam is characterized. Excellent shape recovery performance is observed in foam samples programmed both at room temperature and above their transition temperature. The conversion of porous structures in the foam from closed-cell to open-cell after a shape memory effect cycle is revealed via a series of specially designed oil-dripping experiments and optical images of the micro pores. Programming the strain higher than 20% results in an apparent increase in open-cell level, whereas programming temperatures have almost no influence.
- Published
- 2020
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