相关实验视频

Updated: Feb 17, 2026

Scalable Step-by-Step Approach of Sustainable Bioplastic Production from Food Waste

Scalable Step-by-Step Approach of Sustainable Bioplastic Production from Food Waste

Published on: July 18, 2025

针对生物和化石基聚合物的定制塑化,使用由酸和甘油制成的多功能生物塑化剂

Laura Martellosio^1,2, Martina Ferri^1,2, Luca Lenzi^1,2

¹Department of Civil, Chemical, Environmental and Materials Engineering, Università di Bologna, Via Terracini 28, Bologna 40131, Italy.

ACS polymers Au

|February 16, 2026

概括

三酸甘油酸 (TPAG) 是一种多功能生物基质增塑剂,可提高PHB,PHBV和PVC等聚合物的灵活性和可加工性. 研究表明,TPAG改善了机械性能,并提供了UV阻活性,损耗最小.

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
可持续化学可持续化学

背景情况:

过渡到生物聚合物需要有效的生物基塑化剂来增强材料的性能.
传统的塑化剂经常引起人们对生物降解性和安全性的担忧.
三酸甘油酸 (TPAG) 是一种新兴的生物基质增塑剂,具有广泛的聚合物应用潜力.

研究的目的:

调查TPAG作为各种生物基和常规聚合物的塑化剂的多功能性和有效性.
评估TPAG对所选聚合物的热,机械和功能性质的影响.
评估TPAG在聚合物矩阵中的安全性和稳定性.

主要方法:

将TPAG (5-20 phr) 与聚基酸 (PHB),聚基酸联合酸 (PHBV),聚乙烯 (PVC) 和聚乙烯 (PBS) 结合在一起.
差分扫描热量计 (DSC) 用于分析热过渡 (Tg,Tm).
机械测试 (斯模量,破裂时的延长) 和挥发性,迁移,水接触角度和紫外线阻断活性的评估.

主要成果:

在PHB,PHBV和PVC中,TPAG显著降低了玻璃过渡温度 (Tg),PVC在20°C下显著下降至-25°C.
对于PHB和PBS,化温度下降,PHB在较高的TPAG度下表现出β-晶相形成.
在所有聚合物中,Young的模量在10 phr TPAG下降,提高了灵活性. 断裂时的延长率在PVC (高达349%) 和PHBV (22%) 中在20phr时增加.
波动性和迁移水平是最小的,低于安全限值.
添加TPAG改变了水接触角度,并增强了UV阻性能.

结论:

在多种聚合物中,TPAG表现出显著的塑化效率和多功能性.
生物塑化剂提高了灵活性和可加工性,而不会影响安全性或生物降解性.
TPAG提供多功能优势,包括紫外线保护,使其成为消费者应用的有希望的添加剂.

关键词:

基于生物的生物基础.生物聚合物是一种生物聚合物.糖醇糖醇是什么糖醇糖醇是什么甲酸是什么? 甲酸是什么?塑化剂是一种可塑化剂.

更多相关视频

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer

Published on: November 30, 2020

Stereolithographic 3D Printing with Renewable Acrylates

Stereolithographic 3D Printing with Renewable Acrylates

Published on: September 12, 2018

相关概念视频

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

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 polymer...

Plasticizers

Plasticizers

Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...

Step-Growth Polymerization: Overview

Step-Growth Polymerization: Overview

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...

Free-Radical Chain Reaction and Polymerization of Alkenes

Free-Radical Chain Reaction and Polymerization of Alkenes

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.

Polymer Classification: Stereospecificity

Polymer Classification: Stereospecificity

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...

Polymer Classification: Architecture

Polymer Classification: Architecture

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...