Water-induced shape memory effect of graphene oxide reinforced polyvinyl alcohol nanocomposites

2014 ◽  
Vol 2 (7) ◽  
pp. 2240-2249 ◽  
Author(s):  
Xiaodong Qi ◽  
Xuelin Yao ◽  
Sha Deng ◽  
Tiannan Zhou ◽  
Qiang Fu
Keyword(s):  
Graphene Oxide ◽  
Polyvinyl Alcohol ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect

Calcium sulfate hemihydrate whisker reinforced polyvinyl alcohol with improved shape memory effect

RSC Advances ◽  
2016 ◽  
Vol 6 (58) ◽  
pp. 52982-52986 ◽  
Author(s):  
Wenpeng Zhao ◽  
Chuanhui Gao ◽  
Hongfei Sang ◽  
Jun Xu ◽  
Chuanxing Wang ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Calcium Sulfate ◽  
Shape Memory Composite ◽  
Calcium Sulfate Hemihydrate

A novel shape memory composite is synthesized by introducing calcium sulfate hemihydrate whisker to reinforce polyvinyl alcohol.

How graphene oxide affects shape memory properties and strength of poly(l-lactide-co-ε-caprolactone)

2020 ◽  
Vol 31 (18) ◽  
pp. 2152-2164
Author(s):  
Xue-Jiao Zhang ◽  
Qing-Sheng Yang ◽  
Jin-Song Leng
Keyword(s):  
Graphene Oxide ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Shape Memory Polymer ◽  
Covalent Bond ◽  
Uniaxial Tensile ◽  
Oxide Surface ◽  
Microscopic Mechanism ◽  
Softening Effect

Poly( l-lactide-co-ε-caprolactone) is an environment-friendly shape memory polymer. Molecular dynamics method was used to study the shape memory effect and mechanical properties of graphene oxide–reinforced poly( l-lactide-co-ε-caprolactone) to understand the microscopic mechanism. Two models containing dispersed graphene oxide were constructed. It is shown that the addition of graphene oxide causes the glass transition temperature of material to rise because of limitation on polymer activity. The uniaxial tensile properties of the composites were studied. The results exhibited that strength of composites depend on the interface state of the polymer and graphene oxide. The strength of the composite with covalent bond is much higher than that of another without the covalent bond between graphene oxide and poly( l-lactide-co-ε-caprolactone) generated. Stress softening effect was observed in the cross-linked composite in the glass state. Their uniaxial tension thermodynamic cycles were carried out to consider the shape memory effect of the composites. It is shown that graphene oxide–reinforced composites with different interactions exhibit fair shape memory effect in the direction of paralleling graphene oxide surface. In terms of the direction perpendicular to graphene oxide sheet, the fixed ratios of the composites decrease slightly about 1.64%–3.63%, and the recovery ratios of the composites with the covalent bond are higher than others about 3.22%–12.93%.

Microstructure and shape memory effect of acidic carbon nanotubes reinforced polyvinyl alcohol nanocomposites

2012 ◽  
Vol 129 (3) ◽  
pp. 1299-1305 ◽  
Author(s):  
Fei-Peng Du ◽  
En-Zhou Ye ◽  
Chak-Yin Tang ◽  
Sun-Pui Ng ◽  
Xing-Ping Zhou ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyvinyl Alcohol ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect

Water-Induced shape memory effect of nanocellulose papers from sisal cellulose nanofibers with graphene oxide

2018 ◽  
Vol 179 ◽  
pp. 110-117 ◽  
Author(s):  
Laifu Song ◽  
Yuqi Li ◽  
Zhongqiang Xiong ◽  
Lulu Pan ◽  
Qiyun luo ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Cellulose Nanofibers

scholarly journals Self-Erasable Nanocone Antireflection Films Based on the Shape Memory Effect of Polyvinyl Alcohol (PVA) Polymers

Polymers ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 756 ◽  
Author(s):  
Peng Li ◽  
Yu Han ◽  
Wenxin Wang ◽  
Xinlong Chen ◽  
Peng Jin ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect
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