使用聚乙烯醇和卡达诺基基聚合物的生物聚合物的制造和表征
Da Hae Lee1, Yun Ha Song1, Hee Ju Ahn1
1Department of Chemical Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Republic of Korea.
Molecules (Basel, Switzerland)
|October 26, 2024
概括
这项研究引入了新的生物降解生物聚合物 (PVA-PCD),通过将聚乙烯醇 (PVA) 与生物质衍生卡达聚醇 (PCD) 交叉连接. 这些可持续材料为环保应用提供了更好的热稳定性和可调节性质.
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
- 生物技术是生物技术.
背景情况:
- 基于石油的塑料带来了环境挑战,推动了对可持续替代品的需求.
- 可生物降解的聚合物显示出前景,但通常需要对物理性能进行增强.
- 从生物质中开发可再生材料对于循环经济至关重要.
研究的目的:
- 制造新的生物可降解生物聚合物 (PVA-PCD),通过化学交联聚乙烯醇 (PVA) 与基于卡达诺的聚醇 (PCD).
- 研究合成的PVA-PCD生物聚合物的结构,热和物理特性.
- 评估这些生物质衍生生物聚合物的可持续应用潜力.
主要方法:
- 卡达通过环氧化和基化转化为多.
- 可生物降解的生物聚合物 (PVA-PCD) 通过使用甲 (GLU) 将PVA与PCD化学交联来合成.
- 鉴定包括富里埃变换红外光谱 (FT-IR),X射线衍射 (XRD),热重力测量分析 (TGA) 和胀测试.
主要成果:
- FT-IR证实了通过乙烯酸组形成与以太桥梁的交叉连接.
- 由于交叉连接失调,XRD表示结晶性下降.
- TGA与GLU显著改善了热稳定性,而PVA/PCD比率对TGA的影响很小.
- 胀测试表明,随着交叉连接密度的增加,胀减少,导致具有高强度的水性和脆性材料.
结论:
- 由生物质衍生卡达制造的PVA-PCD生物聚合物具有增强的热稳定性.
- 交叉连接的密度会影响疏水性,强度和膨胀能力.
- 这些新型生物聚合物显示出在可生物降解材料和可持续包装中的应用潜力.
相关概念视频
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 Copolymers
2.5K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
2.5K
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
Step-Growth Polymerization: Overview
3.4K
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...
3.4K
Polymers
35.2K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
35.2K
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


