polyesters

Aliphatic polyesters are not used for fiber production, because of their low melting points.

脂肪族聚酯没有用来生产纤维，可能是熔点低的缘故。

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Article relates to the sucrose polyesters synthesized by sucrose and cottonseed oil.

旨在研究和开发以棉籽油和蔗糖为主要原料合成蔗糖多酯的工艺路线.

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PHAs ( polyhydroxyalkanoates) are bacterial polyesters having the properties of complete biodegradability and biocompatibility, as well as the satisfying physical properties for manufacture, which decide their promising application.

聚羟基脂肪酸酯（polyhydroxyalkanoates，PHAs）因其完全的生物可降解性、良好的物理加工特性以及生物相容性使其应用前途十分广泛。

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Some new recycling processes and technicses of waste polyesters in the world were reviewed.

介绍了国内外废旧聚酯循环利用的新工艺与新方法.

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Synthesis and characterization of a series of Polysulfone ( PSF )-Polyesters ( PEs ) block copolymers were undertaken.

本文合成了一系列聚 砜 — 聚酯类嵌段共聚物.

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These unsaturated polyesters provide an excellent sanding foundation for further finishing steps.

不饱和聚酯为其它涂层提供了很好的砂光基层.

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The biodegradable aliphatic polyesters such as PLA and its homologues have been developed and will be Green Material in 21 century.

一类以聚乳酸及其同系物为代表的、可生物降解的新型合成脂肪族聚酯则有可能成为21世纪的一种绿色材料。

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In this paper thethe preparation, physical properties, biodegradability and applications of the aliphatic polyesters are reviewed.

本文重点介绍了这类脂肪族聚酯的合成方法 、 性能特征及其应用前景.

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Studies of Polyesters with High Inherent Viscosity& Preparation by Chain Extender Method

高特性粘度聚酯的研究&化学增粘法

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The thermal properties of polyesters were investigated with TGA, DSC and polarizing microscope.

聚酯的热性质以TGA 、 DSC、热台偏光显微镜研究.

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polyesters exhibit better non-yellowing properties than epoxies, but not as good as aliphatic urethanes .

聚酯的耐黄性优于环氧树脂，但弱于脂肪族聚氨酯。

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The thermal properties of polyesters were studied by temperature modulated DSC ( ADSC).

采用温度调制式DSC技术（简称ADSC），研究了聚酯热性能的测试方法。

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The amphiphilic graft copolymers based on aliphatic polyesters have potential application in controlled drug delivery and release owing to its special comb-like molecular structure and excellent compatibility with biomacromolecules.

这是因为基于脂肪族聚酯的两亲性接枝共聚物具有了独特的梳状分子结构和优良的生物大分子相容性，在生物医用材料领域尤其是药物的控制释放中有着很广泛的应用前景。

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Polyhydroxyalkanoates ( PHAs) are the most common examples of biodegradable polyesters.

目前最常见的生物降解材料是聚羟基烷酸酯（PHAs）。

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Some biodegradable polymers such as polyesters hae already been employed as excipients in pharmacology.

一些生物可降解聚合物,例如聚酯,已经作为辅料应用在药理学中.

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For these low melting point polyesters with different content of modifier R, the influence of temperature on viscosity of melt must be paid attention during post processing.

对于改性剂R含量不同的低熔点聚酯，在后加工时应充分考虑到温度对熔体粘度的影响。

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The influences of cure accelerators to the synthesis of different polyesters are analyzed.

分析了固化促进剂对不同配方聚酯合成的影响.

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All polyesters have low phase transition temperature, they have good solubilities in common organic solvents.

所有聚酯均具有较低的相转变温度, 在普通的有机溶剂中具有较好的溶解性质.

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Thermal Analysis of Thermotropic Liquid Crystal Chloro-aromatic Polyesters

热致液晶&聚芳酯液晶含氯聚芳酯的热分析

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polyesters are strong, colourfast, and resistant to corrosion and chemical attack but tend to build up a static electric charge.

聚酯很坚韧、不褪色、耐腐蚀和抗化学作用，但容易积累静电。

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polyesters are less brittle than epoxies, but not as flexible or tough as urethanes.

聚酯没有环氧树脂发脆，但也没有聚氨酯的坚韧性。

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Blending vinyl others with unsaturated polyesters can eliminate major obstacles in each class of materials.

混合乙烯醚同不饱和聚酯可以消除各类物质的不相容.

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Thermal decomposition of the polymers and their electrolytes was explored with thermal gravimetric analysis and their kinetics of thermal decomposition is studied. The results show that the decomposition temperature for the polyesters is nearly the same and is not related to the length of the chain units;

通过对聚酯及其电解质的热失重分析，将其热分解进行了动力学处理，结果表明这一系列聚酯分解温度相近，与链节单元长度无关；

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The crystallization behavior and crystallization kinetics of these polyesters was studied by POM, XRD and DSC.

本文采用偏光显微镜、X射线衍射和差示扫描量热仪等研究了它们的结晶行为。

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the thermal diagrams of eleven linear polyesters were measured by differential scanning calorimeter.

为了探讨结构对热性能的影响，测定了十一种线型聚酯的差示扫描量热谱。

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The structure and properties of the polyesters as biodegradable materials

聚酯类生物降解材料的结构与性质

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Biodegradable polyesters are polymer materials, they can be synthesized by chemical methods, enzymatic-catalysis and ferment.

生物可降解聚酯是一种新型高分子聚合材料, 可通过发酵、化学方法和酶催化来合成.

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The main medicinal ingredients in its dry roots were saponin, xanthone, oligosaccharide polyesters, polysaccharide and fat oil.

远志的主要药用成分为皂苷、（口山）酮、寡糖酯类、脂肪油、多糖等。

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molar ratios between the core monomer trimethylolpropane ( defined as tmp) and the mb monomer of 1 ∶ 9 and 1 ∶ 21 gave two hydroxylic hyperbranched polyesters with different molar mass prepared using a pseudo one step procedure.

在核单体三羟甲基丙烷（TMP）与MB摩尔比为1¨9和1¨21的条件下，采用准一步法合成了两种不同摩尔质量的端羟基超支化聚合物。

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