聚乙烯醇/淀粉/柠檬酸/甘油生物共混膜的辐射改性及表征

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2021-03-17 DOI:10.1177/20412479221122298

A. M. Abdel-Ghaffar, H. Ali

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引用次数: 2

摘要

采用流延法制备了聚乙烯醇（PVA）与淀粉（St）的共混膜。研究了不同甘油（Glyce）和柠檬酸（CA）含量的影响。FTIR分析表明，不同组分的制备是成功的。选择了组成为（2:1:1/10vol%）的PVA/St/CA/Glyc生物共混膜，因为它比其他制备的生物共混膜具有耐水性、更高的机械性能和良好的热稳定性。通过以10kGy的剂量照射伽马射线获得了进一步的改进，其中耐水性大大降低并且抗拉强度大大提高。热稳定性随着辐照剂量的增加而增加，辐照剂量最高可达30kGy。将所选择的未辐照或辐照的膜的改性的热性能和机械性能与广泛使用的商业包装膜如LDPE和PP膜进行比较。与商业包装膜相比，所选择的PVA/St生物共混膜具有更高的拉伸性能、良好且紧密的热性能，无论是未辐照的还是辐照的。因此，本研究显示了改性PVA/St生物共混膜的发展，该膜可用于包装工业等许多领域。

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Radiation modification and characterization of polyvinyl alcohol/starch/citric acid/glycerol bioblend film

Blend films of polyvinyl alcohol (PVA) with starch (St) were obtained by casting method. The effect of different contents of glycerol (Glyc) and citric acid (CA) was investigated. The successful preparations of different compositions were shown by FTIR analysis. The bioblend film of PVA/St/CA/Glyc with a composition of (2:1:1/10 vol %) was selected due to its water resistance, higher mechanical properties, and good thermal stability than other prepared bioblend films. Further improvements were obtained by irradiation with gamma rays at a dose of 10 kGy, where the water resistance was highly reduced and the tensile strength strongly improved. The thermal stability increased with the increasing of irradiation doses up to 30 kGy. The modified thermal and mechanical properties of the selected film either non-irradiated or irradiated were compared with widely used commercially packaging films such as LDPE and PP films. Compared to commercially packaging films, the selected PVA/St bioblend film has higher tensile properties, good and closely thermal properties either non-irradiated or irradiated one. Hence, the study showed the development of modified PVA/St bioblend film, which can be used in many fields such as the packaging industry.

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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.