可生物降解的化模酸性塑化剂用于PLA,具有出色的塑化,热稳定性和耐气性
Nengkun Huang1, Fan Wang1, Ruihao Zhang2
1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
Molecules (Basel, Switzerland)
|June 19, 2024
概括
新的基于大豆油的增塑剂提高了聚乳酸 (PLA) 的灵活性和性能. 这些环保替代品与传统塑化剂相比,具有更好的性能和生物降解性.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 基于植物油的增塑剂由于其可再生性和生物降解性,为聚乳酸 (PLA) 提供了可持续的替代品.
- 在PLA和传统植物油可塑剂之间的兼容性存在挑战,往往导致灵活性降低.
研究的目的:
- 开发和评估新的大豆油衍生增塑剂,特别是化二元酸基聚乙烯糖醇甲基乙烯 (HDA-2n),以增强PLA的性能.
- 为了研究HDA-2n中不同类型的氧单元对塑化PLA性能的影响.
主要方法:
- 通过和化二烯酸和聚乙烯糖醇单甲基乙的直接化合成HDA-2n可塑剂.
- 将HDA-2n,特别是HDA-8纳入PLA,以制造塑化复合材料.
- 系统评估塑性PLA的耐低温,热稳定性,气体屏障性能和生物降解性.
主要成果:
- 与HDA-8塑化的PLA显示出优越的低温耐受性 (40.1°C) 和热稳定性 (246.8°C),与二甲甲酸盐 (DOTP) 相比.
- 此外,HDA-8还改善了PLA的气体屏障特性.
- 生物降解测试证实,HDA-8在埋在土壤中时是生物降解的.
结论:
- 从大豆油中提取的HDA-8作为PLA的有效和环保型塑化剂,在关键性能指标上表现优于传统的DOTP.
- HDA-8为PLA行业提供了一个可持续的解决方案,增强了材料的灵活性和环境兼容性.
相关概念视频
Polymer Classification: Architecture
2.7K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
2.7K
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
Stability of Conjugated Dienes
3.3K
Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
3.3K
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
Characteristics and Nomenclature of Homopolymers
3.0K
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
3.0K
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


