Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT.
Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT.
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DOI：
10.3390/ma14237189
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发表时间：
2021-11-25
期刊：
影响因子：
--
通讯作者：
Leluk K
中科院分区：
文献类型：
--
作者：
Ludwiczak J;Frąckowiak S;Leluk K
为了改善可生物降解聚乳酸（PLA）的性能，制备了PLA与聚己二酸丁二醇酯-对苯二甲酸丁二醇酯（PBAT）的共混物。PLA是一种生物基和可再生的可生物降解材料，由淀粉制成。PBAT是一种用于可堆肥薄膜的可生物降解聚酯。为了提高复合材料的性能，通过熔融混合，实施两种类型的添加剂，扩链剂（CE）和蒙脱土（MMT）。CE被用作界面改性剂以增强组件之间的粘附。蒙脱石是一种被广泛研究的添加到聚合物纳米复合材料中的粘土。由于层状结构，它提高了材料的阻隔性能。PLA/PBAT薄膜在挤出过程中进行取向，并引入到PLA/PBAT纳米复合材料中的填料的量为1.0，3.0，和5.0%。通过添加PBAT和5%的MMT证实了PLA阻隔性能的改善，因为氧气渗透率几乎降低了3倍。生物可降解聚合物，扩链剂，蒙脱土，和实施的取向过程中，在复合材料的粘度降低和PLA结晶度的百分比增加（高达25%），和润湿性测试证实了所选的聚合物共混物的协同行为。
In order to improve the properties of biodegradable polylactide (PLA), mixtures with polybutylene adipate-co-terephthalate (PBAT) were prepared. PLA is a bio-based and renewable biodegradable material, made from starch. PBAT is a biodegradable polyester for compostable film. In order to improve the composite properties, two types of additives were implemented via melt mixing, a chain extender (CE) and montmorillonite (MMT). CE was used as an interfacial modifier to enhance the adhesion between components. Montmorillonite is a widely studied clay added to polymer nanocomposites. Due to the lamellar structure, it improves the barrier properties of materials. PLA/PBAT films were oriented in the extrusion process and the amounts of filler introduced into the PLA/PBAT nanocomposites were 1.0, 3.0, and 5.0%. The improvement in the PLA barrier properties by the addition of PBAT and 5% of MMT was confirmed as the oxygen permeability decreased almost by a factor of 3. The addition of the biodegradable polymer, chain extender, montmorillonite, and the implemented orientation process resulted in a decrease in composite viscosity and an increase in the PLA crystallinity percentage (up to 25%), and the wettability tests confirmed the synergic behavior of the selected polymer blend.
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影响因子：
3
作者：
Coltelli, Maria-Beatrice;Della Maggiore, Irene;Ciardelli, Francesco
通讯作者：
Ciardelli, Francesco
影响因子：
5.1
作者：
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通讯作者：
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影响因子：
5.1
作者：
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影响因子：
--
作者：
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通讯作者：
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影响因子：
3.9
作者：
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通讯作者：
Ciardelli, Francesco