可生物降解的反应性兼容剂,用于有效地在现场兼容聚 (乳酸) /聚 (丁烯基酸) 混合物
Jieyu Guan1, Ce Zhang1, Pengwu Xu1
1The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
International journal of biological macromolecules
|February 10, 2024
概括
开发新的生物降解环氧共聚合物 (MDOG) 提高了聚乳酸/聚乙烯二甲 (PLA/PBAT) 混合物的兼容性和性能,用于可持续的包装应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
背景情况:
- 像PLA/PBAT这样的可生物降解聚合物对于可持续包装至关重要.
- 不良的兼容性限制了PLA/PBAT混合物的应用.
- 现有的兼容剂缺乏热稳定性和生物降解性.
研究的目的:
- 合成和描述新的生物降解环氧共聚物 (MDOG).
- 使用MDOG提高PLA/PBAT混合物的兼容性和机械性能.
- 为环保包装开发热稳定和可生物降解的兼容剂.
主要方法:
- 自由基对2-甲基-1,3-二氧化和甘氨基甲酸盐的联合聚合,形成MDOG.
- 在PLA/PBAT混合物中加入MDOG.
- 评估热稳定性 (分解温度) 和机械性能 (抗拉强度,断裂性).
主要成果:
- MDOG共聚物具有良好的生物降解性和高热分解温度 (361°C).
- 通过减少PBAT颗粒大小,MDOG改善了PLA/PBAT混合物的界面粘合.
- 聚烯/PBAT/MDOG混合物显示拉伸强度增加了25% (34.6 MPa) 和断裂度增加了81% (115.8 MJ/m3).
结论:
- 对于PLA/PBAT混合物来说,MDOG是一种有效的,热稳定的,生物可降解的兼容剂.
- 这项研究为开发用于包装行业的先进材料提供了新的方法.
- PLA/PBAT/MDOG混合物的增强性能支持它们在环保包装解决方案中的使用.
相关概念视频
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
1.9K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
1.9K
Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K
Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K
Polymer Classification: Stereospecificity
2.4K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
2.4K
Step-Growth Polymerization: Overview
3.5K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
3.5K
Free-Radical Chain Reaction and Polymerization of Alkenes
7.8K
The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.
7.8K


