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刘孝波, Zhiyong Qian, Yi He, Yaobang Zou, Sai Li, Xiaobo Liu
Z. Qian et al. Polymer Degradation and Stability 83 (2004) 127-132,-0001,():
-1年11月30日
Degradable polyesteramide fibres were processed by melt-spinning. Tensile properties of as-spun and hot-drawn fibres were also investigated. After drawing, the overall crystallinity and the melting temperature of the copolymer increased. As a result, the tensile strength of the fibre increased, and the elongation at break decreased. The morphology of the surface and fracture cross section were studied by SEM. During alkaline degradation, the tensile strength and the elongation at break both decreased.
Polyesteramide, Degradable polymer, Fibre, Thermal property, Tensile property
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刘孝波, Zhiyong Qian, Sai Li, Yi He, Cao Li, Xiaobo Liu
Z. Y. Qian et al. Polymer Degradation and Stability 81 (2003) 279-286,-0001,():
-1年11月30日
A new kind of polyesteramide copolymer based on e-caprolactone and 11-aminoundecanoic acid has been synthesized by melt polycondensation. The copolymers were characterized by FTIR, 1H-NMR, DSC, and WAXD. With the increase in aminoundecanoic acid content, the melting temperature, heat of fusion, and Td, 50% increased accordingly. The thermal degradation of the P (CL/AU) x/y copolymers was studied using FTIR, and TG During thermal degradation, the ester bond decomposes at lower temperature, then the amide bond decomposes at higher temperature.
Polyesteramide, Biodegradable polymer, Crystallinity, Thermal degradation, Nylon 11
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【期刊论文】Mechanical and thermal properties study of glass fiber reinforced polyarylene ether nitriles
刘孝波, Cao Li, Xiaobo Liu
C. Li, X. Liu. Materials Letters 61 (2007) 2239-2242,-0001,():
-1年11月30日
Glass fiber (GF) reinforced phenolphthalein-based polyarylene ether nitrile composites were prepared through melt blending, and the composites were characterized by various methods to find that both the mechanical and thermal properties of the silane coupling agent treated GF reinforced composites were improved with the increase of GF content. Tensile strength, flexural strength and Izod impact strength got their highest values with GF content at 35 wt.%, 30 wt.% and 25 wt.% respectively. The heat distortion temperature (HDT) of 30 wt.% GF reinforced composite is 284
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【期刊论文】Synthesis and dielectric property of polyarylene ether nitriles/titania hybrid films
刘孝波, Cao Li, Yi Gu, Liu Xiaobo, Zou Yaobang, Tang Anbing
C. Li et al. Thin Solid Films 515 (2006) 1872-1876,-0001,():
-1年11月30日
Titania-containing Polyarylene ether nitriles (PEN) hybrid films have been successfully fabricated via in-situ sol-gel process, nanosized TiO2 particles are found well dispersed within the polymer matrix. The dielectric properties of the films were measured to find that dielectric constant as well as dielectric loss of the hybrid films increased linearly with the increasing TiO2 content without sacrificing dielectric breakdown strength compared to that of the pristine polymer. Increased gel temperature reduced dielectric loss efficiently but has little influence on dielectric constant.
Polyarylene ether nitriles, Hybrid, Titanium oxide, Dielectric property
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【期刊论文】Synthesis and hydrolytic degradation of aliphatic polyesteramides branched by glycerol
刘孝波, Hailian Zhang, , Yi He, Sai Li, Xiaobo Liu
H. Zhang et al. Polymer Degradation and Stability 88 (2005) 309-316,-0001,():
-1年11月30日
A series of branched polyesteramides (PEAs) were synthesized from adipic acid, hexamethylene diamine, 1, 4-butanediol and caprolactam by melt polycondensation using glycerol as branching agent. The obtained copolymers, with glycerol contents of 0-0.9 wt% (LPEA-PEAg10) were characterized by FTIR, 1H NMR, DSC and viscometry. The FTIR and 1H NMR spectra demonstrated the formation of ester and amide bonds. DSC data indicated the melting and crystallization temperatures decrease with increasing glycerol content. Water absorption experiments suggested no distinct difference in hydrophilicity between these branched PEAs. Alkaline hydrolysis of PEA films was conducted in pH 11.0 NaOH solution at 37, 50 or 80
Hydrolytic degradation, Branched polymers, Polyesteramide, Glycerol
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