Synthesis and properties of polyimides derived from bis(4-aminophenyl)isohexides

2016 ◽  
Vol 29 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Xiaodong Ji ◽  
Jingling Yan ◽  
Xiuju Liu ◽  
Zikun Wang ◽  
Zhen Wang
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Glass Transition ◽  
Physical And Mechanical Properties ◽  
Amic Acid ◽  
Systematic Investigation ◽  
Structure Property ◽  
Free Standing ◽  
Structure Property Relationship ◽  
Relationship Of

Several partially bio-based polyimides have been successfully synthesized by polycondensation between bis(4-aminophenyl)isohexides with various commercial dianhydrides. Flexible and free-standing films were readily obtained from their poly(amic acid) or polyimide solutions. A systematic investigation of the structure–property relationship of polyimides highlights the significant impact of the isohexides moieties on their physical and mechanical properties (glass transition temperature, inherent viscosity, thermal stability, solubility, and mechanical properties). The results revealed that these polyimides exhibited comparable thermal stability and mechanical properties to those of petrochemical-based ones.

Structure-Property Relationship of Castor Oil Based Chain Extended Polyurethane/Starch Biocomposites

2010 ◽  
Vol 123-125 ◽  
pp. 371-374
Author(s):  
Siddaramaiah ◽  
Manjula Koregala Sidde Gowda ◽  
Joong Hee Lee
Keyword(s):  
Mechanical Properties ◽  
Water Uptake ◽  
Castor Oil ◽  
Structure Property ◽  
X Ray ◽  
Property Relationship ◽  
Structure Property Relationship ◽  
Relationship Of

Polyurethane (PU)/starch biocomposites have been prepared with different weight fractions of starch (viz., from 0 to 40 wt %). The fabricated PU/starch composites were characterized by mechanical properties and thermal (DSC and TGA) behaviors. Microcrystalline parameters were calculated using X-ray profile. Water uptake and its effect on mechanical properties have been evaluated.

Structure-Property Relationship in Rubber-Modified Propylene-Ethylene Block Copolymer Blends

1988 ◽  
Vol 61 (5) ◽  
pp. 747-759 ◽  
Author(s):  
M. M. Sain ◽  
I. Hudec ◽  
J. Beniska ◽  
P. Rosner
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Block Copolymer ◽  
Strong Interaction ◽  
Transition Temperatures ◽  
Structure Property ◽  
Glass Transition Temperatures ◽  
Copolymer Blends ◽  
Structure Property Relationship ◽  
Plastic Components

Abstract The incorporation of a phase modifier, as is well known in the case of elasto-plastic blends, leads to an improvement of mechanical properties and brittleness character for PRP-EVA blends. Similarly, the influence of a cocuring agent and a phase modifier on NR-PRP blends also improved the mechanical properties. Although the modification of the PRP-EVA blend has very little influence on glass transition temperatures, the NR-PRP blends show a measurable shift in their glass-transition temperatures. It is demonstrated that strong interaction occurs between the elastic and plastic components of the blends. Further, it has been shown that this interaction is responsible for improved properties of the blends over that of the pure polymer components.

Physical and Mechanical Properties of Epoxy-Nanoparticulate Composite Adhesive

2012 ◽  
Vol 585 ◽  
pp. 297-300 ◽  
Author(s):  
Prakriti Kumar Ghosh ◽  
Manjeet Singh Goyat ◽  
Deepak Mishra ◽  
Rishabh Nagori
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Glass Transition ◽  
Tensile Properties ◽  
Physical And Mechanical Properties ◽  
Epoxy Adhesive ◽  
Al2o3 Nanoparticles ◽  
Thermal And Mechanical Properties ◽  
Vibration Process ◽  
Dispersion Of Nanoparticles

The effect of type of nanoparticles on morphology, thermal and mechanical properties of epoxy-nanoparticulate composite adhesive produced via ultrasonic vibration process has been investigated. The morphology, thermal and mechanical properties of epoxy-nanoparticulate composite adhesive was measured with FESEM/AFM, DTA/TGA, and Hounsfield respectively. The FESEM/AFM images of the epoxy-nanoparticulate composite adhesive reveals significantly fine dispersion of nanoparticles. The incorporation TiO2 nanoparticles in epoxy adhesive results in improved glass transition temperature (Tg), thermal stability and tensile properties of the nanocomposite. But, the incorporation of comparatively finer size Al2O3 nanoparticles leads to decrease in the Tg, thermal stability and tensile properties of the nanocomposite.

scholarly journals Solvent-Free Digital Light 3D Printing using Biodegradable Polymeric Photoinitiators

2020 ◽  
Author(s):  
matthias sandmeier ◽  
nevena paunovic ◽  
Riccardo Conti ◽  
Hofmann Leopold ◽  
Jieping Wang ◽  
...  
Keyword(s):  
3D Printing ◽  
Polymeric Materials ◽  
Systematic Investigation ◽  
Tissue Scaffolds ◽  
Solvent Free ◽  
Medical Implants ◽  
Structure Property ◽  
Digital Light Processing ◽  
Structure Property Relationship ◽  
Relationship Of

<p>Vat photopolymerization 3D printing provides new</p><p>opportunities for the fabrication of tissue scaffolds and medical</p><p>devices. However, it usually requires the use of organic solvents or</p><p>diluents to dissolve the solid photoinitators, making this process</p><p>environmentally unfriendly, and not optimal for biomedical</p><p>applications. Here, we report biodegradable liquid polymeric</p><p>photoinitiators for solvent-free 3D printing of biodegradable polymeric</p><p>materials by digital light processing. These photoinitiators enable</p><p>systematic investigation of structure-property relationship of 3D</p><p>printing polymeric materials without the interference from the reactive</p><p>diluents and offer new perspectives for the solvent-free 3D additive</p><p>manufacturing of bioresorbable medical implants as well as other</p><p>functional devices.</p>

scholarly journals Structure–property relationship of nitramino oxetane polymers: a computational study on the effect of pendant chains

RSC Advances ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 3120-3127
Author(s):  
Yiding Ma ◽  
Yingzhe Liu ◽  
Tao Yu ◽  
Weipeng Lai ◽  
Zhongxue Ge ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Computational Study ◽  
Structure Property ◽  
Property Relationship ◽  
Structure Property Relationship ◽  
Relationship Of ◽  
Comprehensive Study

A comprehensive study of the effect of the structure of pendant chains on the energetic and mechanical properties of nitramino oxetane polymers has been conducted.

Colorless polyimides derived from adamantane-containing diamines

2020 ◽  
Vol 11 (37) ◽  
pp. 6009-6016
Author(s):  
Jie Miao ◽  
Xiaofan Hu ◽  
Xianwei Wang ◽  
Xiangsheng Meng ◽  
Zhen Wang ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperatures ◽  
Structure Property ◽  
Glass Transition Temperatures ◽  
Property Relationship ◽  
Structure Property Relationship ◽  
Relationship Of

Colorless polyimides with high glass transition temperatures (up to 440 °C) were developed from three adamantane-containing diamines, and the structure–property relationship of this series of polyimides was established.

scholarly journals Solvent-Free Digital Light 3D Printing using Biodegradable Polymeric Photoinitiators

2020 ◽  
Author(s):  
matthias sandmeier ◽  
nevena paunovic ◽  
Riccardo Conti ◽  
Hofmann Leopold ◽  
Jieping Wang ◽  
...  
Keyword(s):  
3D Printing ◽  
Polymeric Materials ◽  
Systematic Investigation ◽  
Tissue Scaffolds ◽  
Solvent Free ◽  
Medical Implants ◽  
Structure Property ◽  
Digital Light Processing ◽  
Structure Property Relationship ◽  
Relationship Of

<p>Vat photopolymerization 3D printing provides new</p><p>opportunities for the fabrication of tissue scaffolds and medical</p><p>devices. However, it usually requires the use of organic solvents or</p><p>diluents to dissolve the solid photoinitators, making this process</p><p>environmentally unfriendly, and not optimal for biomedical</p><p>applications. Here, we report biodegradable liquid polymeric</p><p>photoinitiators for solvent-free 3D printing of biodegradable polymeric</p><p>materials by digital light processing. These photoinitiators enable</p><p>systematic investigation of structure-property relationship of 3D</p><p>printing polymeric materials without the interference from the reactive</p><p>diluents and offer new perspectives for the solvent-free 3D additive</p><p>manufacturing of bioresorbable medical implants as well as other</p><p>functional devices.</p>

Structure–property relationship of acceptor-substituted oligothiophenes

Tetrahedron ◽  
2010 ◽  
Vol 66 (45) ◽  
pp. 8729-8733 ◽  
Author(s):  
M.S. Wrackmeyer ◽  
M. Hummert ◽  
H. Hartmann ◽  
M.K. Riede ◽  
K. Leo
Keyword(s):  
Structure Property ◽  
Property Relationship ◽  
Structure Property Relationship ◽  
Relationship Of
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