固化对蒙脱土纳米粘土填充生物基聚酯水解降解的影响

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2017-05-01 DOI:10.1177/204124791700800201

M. Islam, N. Isa, A. Yahaya

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引用次数: 0

摘要

研究了蒙脱石纳米粘土（MNCs）增强棕榈油基聚酯（POPE）的固化动力学和水解降解性能。采用醇化和酯化工艺生产POPE。使用甲基乙基酮过氧化物（MEKP）、苯乙烯和环烷酸钴在120°C下对制备的树脂进行热固化。用差示扫描量热法（DSC）分析了固化动力学。通过该分析测定了反应速率、活化能和转化率。发现固化过程中加热速率的增加降低了活化能和反应级数。采用碱溶液对不同固化条件下制备的样品进行水解降解，如低周期高温（LPHT）和高周期低温（HPLT）。拉伸强度、熔点和表面形态方面的降解行为证实，固化过程的变化会影响性能。与HPLT条件相比，LPHT条件下复合材料的降解有影响且更快。

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Effect of Curing on Hydrolytic Degradation of Montmorillonite Nanoclays Filled Biobased Polyesters

Palm oil based polyester (POPE) reinforced with montmorillonite nano clays (MNCs) were investigated for curing kinetics and hydrolytic degradation analysis. Alcoholises and esterification process were followed to produce POPE. The prepared resins were cured thermally by using methyl ethyl ketone peroxide (MEKP), styrene and cobalt-naphthenate at 120°C. The curing kinetics was analysed by differential scanning calorimetry (DSC). The rate of reaction, activation energy and degree of conversion were measured by this analysis. The activation energy and reaction order were found to be decreased due to increase of heating rate of the curing process. Alkali solution was used for the hydrolytic degradation for different samples prepared at different curing conditions such as low period-high temperature (LPHT) and high period-low temperature (HPLT). The properties were affected due to the variation of curing process as confirmed by degradation behaviours in terms of tensile strength, melting point and surface morphology. The degradation of the composites were influential and faster at LPHT condition compared to HPLT condition.

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.