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

In this work Poly ε-caprolactone (PCL)/ Diglycidyl ether of bisphenol A (DGEBA) blends were electrospun and the obtained mats were UV cured to achieve shape memory properties. In the majority of studies, when blends with different compositions are electrospun, the process variables such as voltage or flow rate are fixed independently of the composition and consequently the quality of the fibers is not optimized in all of the range studied. In the present work, using the design of experiments methodology, flow rate and voltage required to obtain a stable process were evaluated as responses in addition to the fiber diameter and shape memory properties. The results showed that the solution concentration and amount of PCL played an important role in the voltage and flow rate. For the shape memory properties excellent values were achieved and no composition dependence was observed. In the case of fiber diameter, similar results to previous works were observed.

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The F···H Hydrogen Bonding Effect on the Dynamic Mechanical and Shape-Memory Properties of a Fluorine-Containing Polybenzoxazine

Macromolecular Chemistry and Physics ◽

10.1002/macp.201700079 ◽

2017 ◽

Vol 218 (15) ◽

pp. 1700079 ◽

Cited By ~ 4

Author(s):

Yanfang Liu ◽

Rongrong Wang ◽

Qin An ◽

Xuehui Su ◽

Cuiyun Li ◽

...

Keyword(s):

Hydrogen Bonding ◽

Shape Memory ◽

Dynamic Mechanical ◽

Bonding Effect ◽

Shape Memory Properties ◽

Hydrogen Bonding Effect

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Thermal conductivity, specific heat, and dynamic mechanical behavior of diglycidyl ether of bisphenol a cured with m-phenylenediamine

Journal of Applied Polymer Science ◽

10.1002/app.1969.070131115 ◽

1969 ◽

Vol 13 (11) ◽

pp. 2411-2425 ◽

Cited By ~ 36

Author(s):

R. P. Kreahling ◽

D. E. Kline

Keyword(s):

Thermal Conductivity ◽

Bisphenol A ◽

Mechanical Behavior ◽

Specific Heat ◽

Diglycidyl Ether ◽

Dynamic Mechanical ◽

Dynamic Mechanical Behavior

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

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x211023587 ◽

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.

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Polyethylenes Functionalized with Ureidopyrimidone: Synthesis, Thermomechanical Properties and Shape Memory Behavior

Polymer Chemistry ◽

10.1039/d1py00625h ◽

2021 ◽

Author(s):

Honggang Mei ◽

Bingjie Zhao ◽

Huaming Wang ◽

Lei Li ◽

Sixun Zheng

Keyword(s):

Hydrogen Bonds ◽

Bisphenol A ◽

Shape Memory ◽

Thermomechanical Properties ◽

Diglycidyl Ether ◽

Shape Memory Behavior ◽

Step Growth ◽

Step Growth Polymerization

In this contribution, we reported an approach to functionalize polyethylene with quadruple hydrogen bonds. First, a poly(hydroxyether ester) (PHEE) was synthesized via step-growth polymerization of diglycidyl ether of bisphenol A...

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