Thermally stable polylactides by stereocomplex formation and conjugation of both terminals with bio-based cinnamic acid derivatives

RSC Advances ◽  
2015 ◽  
Vol 5 (111) ◽  
pp. 91423-91430 ◽  
Author(s):  
Hang Thi Tran ◽  
Hiroharu Ajiro ◽  
Mitsuru Akashi
Keyword(s):  
Thermal Stability ◽  
Natural Products ◽  
Cinnamic Acid ◽  
High Performance ◽  
High Thermal Stability ◽  
Thermally Stable ◽  
Cinnamic Acid Derivatives ◽  
High Performance Polymers ◽  
Stereocomplex Formation

A series of polylactide stereocomplexes with conjugation of both terminals showed high thermal stability and photoreactivity, and are useful as high performance polymers and photoreactive polymers based on natural products.

Study of the polymerization of high-performance polymers by electrons and x-rays: 1. The case of polypropargylic-butanedioldimethacrylate systems

1995 ◽  
Vol 7 (2) ◽  
pp. 157-180 ◽  
Author(s):  
Marie-Florence Grenier-Loustalot ◽  
Vincent Denizot ◽  
Daniel Beziers
Keyword(s):  
Thermal Stability ◽  
Solid State ◽  
Carbon Fibre ◽  
High Performance ◽  
Thermal Polymerization ◽  
High Thermal Stability ◽  
X Rays ◽  
X Ray ◽  
High Performance Polymers ◽  
Pure Resin

We have investigated the polymerization of polypropargylic butanedioldimeth-acrylate derivatives using electron and x-ray irradiation. The results obtained with the pure resin and carbon-fibre-based composites were compared in terms of kinetics, mechanisms and properties with those obtained by thermal polymerization. Data gathered using a panoply of solid state physicochemical techniques have shown that these polymers are good systems for obtaining composites having high thermal stability at temperatures higher than 350°C.

Semi-bio-based aromatic polyamides from 2,5-furandicarboxylic acid: toward high-performance polymers from renewable resources

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87013-87020 ◽  
Author(s):  
Kaiju Luo ◽  
Yan Wang ◽  
Junrong Yu ◽  
Jing Zhu ◽  
Zuming Hu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Renewable Resources ◽  
High Performance ◽  
Good Thermal Stability ◽  
Aromatic Polyamides ◽  
High Performance Polymers ◽  
Furandicarboxylic Acid

Aromatic furanic polyamides with relatively high molecular weight were synthesized, and good thermal stability and mechanical properties were demonstrated.

Porphyrinated polyimide honeycomb films with high thermal stability for HCl gas sensing

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 30472-30477 ◽  
Author(s):  
Fu-Wen Lin ◽  
Xiao-Ling Xu ◽  
Ling-Shu Wan ◽  
Jian Wu ◽  
Zhi-Kang Xu
Keyword(s):  
Thermal Stability ◽  
Gas Sensing ◽  
High Thermal Stability ◽  
Thermally Stable ◽  
Hcl Gas ◽  
Excellent Property

Thermally stable films with ordered pores are fabricated from porphyrinated polyimides and they exhibit excellent property in HCl gas sensing.

scholarly journals High-performance La-doped BCZT thin film capacitors on LaNiO3/Pt composite bottom electrodes with ultra-high efficiency and high thermal stability

2019 ◽  
Vol 45 (9) ◽  
pp. 11749-11755 ◽  
Author(s):  
Shangkai He ◽  
Biaolin Peng ◽  
Glenn J.T. Leighton ◽  
Christopher Shaw ◽  
Ningzhang Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
High Performance ◽  
High Efficiency ◽  
High Thermal Stability ◽  
Thin Film Capacitors ◽  
La Doped

Indole-based high-performance polymeric materials with enhanced mechanical and thermal properties via cation-π interaction

2019 ◽  
Vol 32 (6) ◽  
pp. 662-668
Author(s):  
Xiao-fang Guan ◽  
Cong Liao ◽  
Li Yang ◽  
Guan-jun Chang
Keyword(s):  
Thermal Stability ◽  
Heat Resistance ◽  
Self Assembly ◽  
High Performance ◽  
Mechanical Performance ◽  
Polymeric Materials ◽  
Design Strategy ◽  
Mechanical And Thermal Properties ◽  
Innovative Design ◽  
High Performance Polymers

The preparation of high-performance polymeric materials with both excellent overall mechanical properties and heat resistance remains a considerable challenge. Inspired by the delicate self-assembly processes in nature, a facile strategy is reported for the preparation of high-performance polymeric materials with enhanced mechanical strength and improved thermal stability. In this instance, we successfully constructed a cation- π cross-linked polyimide (Na-poly(aryl indole) imide (Na-PINI)) film with enhanced mechanical performance and heat resistance (∼490°C). This work presents an innovative design strategy for realizing robust polymeric materials with integrated strength and thermal stability; the cation- π interaction is demonstrated to be a new method that may achieve many useful properties for high-performance polymers.

Heat-resistant and photoluminescent indole-based poly(ether sulfone)s

2017 ◽  
Vol 30 (4) ◽  
pp. 475-479 ◽  
Author(s):  
Wenxuan Wei ◽  
Li Yang ◽  
Guanjun Chang
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Proton Nuclear Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Condensation Polymerization ◽  
High Glass Transition Temperature ◽  
Scanning Calorimetry ◽  
Good Thermal Stability ◽  
High Performance Polymers ◽  
Good Agreement

Indole-based poly(ether sulfone)s (PINESs), as novel high-performance polymers, have been obtained by the condensation polymerization of 4-hydroxyindole and hydroquinone with activated difluoro monomers via a catalyst-free nucleophilic substitution reaction. The structures of the polymers are characterized by means of Fourier transform infrared and proton nuclear magnetic resonance spectroscopy, and the results show good agreement with the proposed structures. Differential scanning calorimetry and thermogravimetric analysis measurements exhibit that polymers possess high glass transition temperature ( Tgs > 245°C) and good thermal stability with high decomposition temperatures ( Tds > 440°C). In addition, due to their special structure, PINESs are endowed with significantly strong photonic luminescence in N, N-dimethylformamide.

TOUGHMET 2

Alloy Digest ◽  
2013 ◽  
Vol 62 (5) ◽  
Keyword(s):  
Heat Treatment ◽  
Thermal Stability ◽  
Fracture Toughness ◽  
Wear Resistance ◽  
High Performance ◽  
Mechanical Performance ◽  
High Thermal Stability ◽  
Lead Free ◽  
Plain Bearing ◽  
Ni Alloy

Abstract ToughMet 2 is a high performance, wrought, heat treatable, lead-free strip Cu-Ni alloy that imparts superior mechanical performance and high thermal stability to plain bearing applications. Parts are easily formed and they can be machined either before or after heat treatment. ToughMet alloys are a line of spinodal hardened Cu-Ni anti-galling alloys for bearings capable of performing with a variety of shafting materials and lubricants. The alloys combine a high lubricity with wear resistance in these severe loading conditions. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming and machining. Filing Code: Cu-724. Producer or source: Materion Brush Performance Alloys. Originally published September 2004, revised May 2013.

scholarly journals Direct synthesis of highly stretchable ceramic nanofibrous aerogels via 3D reaction electrospinning

2021 ◽  
Author(s):  
Xiaota Cheng ◽  
Yang Si ◽  
Jianyong Yu ◽  
Bin Ding
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Tensile Strain ◽  
Compressive Strain ◽  
Direct Synthesis ◽  
Extreme Environments ◽  
Three Dimensional ◽  
High Thermal Stability ◽  
High Porosity ◽  
Mechanical Performances

Abstract Ceramic aerogels are attractive for many applications due to their ultralow density, high porosity, and multifunctionalities but are limited by the typical trade-off relationship between mechanical properties and thermal stability when used in extreme environments. In this work, we designed and synthesized a unique ceramic nanofibrous aerogels with three-dimensional (3D) interwoven crimped-nanofibre structures that endow the aerogels with superior mechanical performances and high thermal stability. These ceramic aerogels were synthesized by a direct and facile route, 3D reaction electrospinning. They displayed robust structural stability with structure-derived mechanical ultra-stretchability up to 100% tensile strain and superior restoring capacity up to 40% tensile strain, 95% bending strain and 60% compressive strain, high thermal stability from -196 to 1400°C, repeatable stretchability at working temperatures up to 1300 ℃, and a low thermal conductivity of 0.0228 W m−1 K−1 in air. This work should enable the innovative design of high-performance ceramic aerogels for various applications.

High Resistivity GaN Formed by Ion Implantation

2000 ◽  
Vol 639 ◽  
Author(s):  
Jun Kudo ◽  
Yuji Hishida ◽  
Masanori Watanabe ◽  
Tomoaki Hatayama ◽  
Takashi Fuyuki
Keyword(s):  
Thermal Stability ◽  
Ion Implantation ◽  
High Frequency ◽  
High Thermal Stability ◽  
High Resistivity ◽  
Thermally Stable ◽  
Active Elements ◽  
High Frequency Devices ◽  
Underlying Substrate

ABSTRACTAdvanced high frequency devices using GaN-based semiconductor require the technology to form high resistivity regions with high thermal stability to electrically isolate the active elements from surroundings, as well as from the underlying substrate. The present paper describes the preparation of thermally stable, high resistivity GaN layers by ion implantation. It was confirmed that C or Zn implantation yielded high resistivity layers. In particular, Zn implantation yielded the layers with resistivity on the order of 1010 cm, which could be sustained at temperatures as high as 1000.

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