Effect of methyl position on the dynamic mechanical and shape-memory properties of cresol-based polybenzoxazines

2017 ◽  
Vol 134 (42) ◽  
pp. 45443 ◽  
Author(s):  
Yanfang Liu ◽  
Shuning Song ◽  
Xuehui Su ◽  
Aiqing Wang ◽  
Shanshan Shen ◽  
...  
Keyword(s):  
Shape Memory ◽  
Dynamic Mechanical ◽  
Shape Memory Properties

Dynamic mechanical and shape memory properties of polybenzoxazines based on aminopropyl-terminated siloxanes

2016 ◽  
Vol 133 (42) ◽  
Author(s):  
Xuehui Su ◽  
Shuning Song ◽  
Chunhui Zhang ◽  
Jinbai Huang ◽  
Yanfang Liu ◽  
...  
Keyword(s):  
Shape Memory ◽  
Dynamic Mechanical ◽  
Shape Memory Properties

Effects of graphene nanoplatelets on bio-based shape memory polymers from benzoxazine/epoxy copolymers actuated by near-infrared light

2021 ◽  
pp. 1045389X2110235
Author(s):  
Surapong Srisaard ◽  
Lunjakorn Amornkitbamrung ◽  
Krittapas Charoensuk ◽  
Chaweewan Sapcharoenkun ◽  
Chanchira Jubsilp ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Recovery ◽  
Near Infrared ◽  
Shape Memory Polymers ◽  
Graphene Nanoplatelets ◽  
Dynamic Mechanical ◽  
Nir Light ◽  
Uniform Dispersion ◽  
Shape Memory Properties ◽  
Shape Fixity

Novel near-infrared (NIR) light-induced bio-based shape memory polymers (SMPs) were prepared from copolymers of vanillin/furfurylamine-based benzoxazine monomer (V-fa monomer) and epoxidized castor oil (ECO). Incorporation of graphene nanoplatelets (GNPs) as photothermal fillers into the copolymers provided shape memory properties under near-infrared (NIR) light actuation. The effects of GNP content on photothermal, thermal, dynamic mechanical, morphology, and shape memory properties of the bio-based benzoxazine/epoxy copolymers (V-fa/ECO copolymers) were investigated. The results showed that the addition of GNPs significantly improved the photothermal, thermal, and dynamic mechanical properties of the copolymers. The uniform dispersion of 3 wt% GNPs in the V-fa/ECO copolymers resulted in the highest shape memory performance with shape fixity of 92% and shape recovery of 99% upon NIR light actuation. The recovery time decreased with the increment of GNP content, and the V-fa/ECO copolymers filled with GNPs displayed good execution in the repeated fold-deploy, in which the shape fixity and shape recovery values were close to the original specimen. Therefore, the outstanding properties of V-fa/ECO copolymers filled with GNPs had a potential to be excellent SMPs under NIR actuation.

Dynamic mechanical and shape memory properties of copolymers based on polyetheramine-type benzoxazines and diglycidylether of bisphenol-A

2018 ◽  
Vol 135 (47) ◽  
pp. 46838 ◽  
Author(s):  
Cuiyun Li ◽  
Shanshan Shen ◽  
Zhiyun Li ◽  
Hecheng Zhen ◽  
Jinbai Huang ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Shape Memory ◽  
Dynamic Mechanical ◽  
Shape Memory Properties

Dynamic mechanical and shape memory properties of copolymers based on o -allylphenol type benzoxazines and diglycidyl ether of bisphenol-A

2018 ◽  
Vol 67 (9) ◽  
pp. 1266-1274 ◽  
Author(s):  
Shanshan Shen ◽  
Cuiyun Li ◽  
Huiyun Yang ◽  
Yanyu Zhang ◽  
Fengan Han ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Shape Memory ◽  
Diglycidyl Ether ◽  
Dynamic Mechanical ◽  
Shape Memory Properties

Effect of methoxy position on dynamic mechanical and shape memory properties of methoxyphenol-based polybenzoxazines

2020 ◽  
Vol 25 (6) ◽  
pp. 397-408
Author(s):  
Guosheng Lu ◽  
Huiyun Yang ◽  
Hecheng Zhen ◽  
Cuiyun Li ◽  
Shanshan Shen ◽  
...  
Keyword(s):  
Shape Memory ◽  
Dynamic Mechanical ◽  
Shape Memory Properties

scholarly journals Effect of Nanofiller Content on Dynamic Mechanical and Thermal Properties of Multi-Walled Carbon Nanotube and Montmorillonite Nanoclay Filler Hybrid Shape Memory Epoxy Composites

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 700
Author(s):  
Muhamad Hasfanizam Mat Yazik ◽  
Mohamed Thariq Hameed Sultan ◽  
Mohammad Jawaid ◽  
Abd Rahim Abu Talib ◽  
Norkhairunnisa Mazlan ◽  
...  
Keyword(s):  
Shape Memory ◽  
High Performance ◽  
Loss Modulus ◽  
Decomposition Temperature ◽  
Hybrid Nanocomposites ◽  
Mechanical And Thermal Properties ◽  
Scanning Calorimetry ◽  
Hybrid Filler ◽  
Dynamic Mechanical ◽  
Tan Δ

The aim of the present study has been to evaluate the effect of hybridization of montmorillonite (MMT) and multi-walled carbon nanotubes (MWCNT) on the thermal and viscoelastic properties of shape memory epoxy polymer (SMEP) nanocomposites. In this study, ultra-sonication was utilized to disperse 1%, 3%, and 5% MMT in combination with 0.5%, 1%, and 1.5% MWCNT into the epoxy system. The fabricated SMEP hybrid nanocomposites were characterized via differential scanning calorimetry, dynamic mechanical analysis, and thermogravimetric analysis. The storage modulus (E’), loss modulus (E”), tan δ, decomposition temperature, and decomposition rate, varied upon the addition of the fillers. Tan δ indicated a reduction of glass transition temperature (Tg) for all the hybrid SMEP nanocomposites. 3% MMT/1% MWCNT displayed best overall performance compared to other hybrid filler concentrations and indicated a better mechanical property compared to neat SMEP. These findings open a way to develop novel high-performance composites for various potential applications, such as morphing structures and actuators, as well as biomedical devices.

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