Synthesis and characterization of poly(butylene adipate-L-lactide-butylene terephthalate)

IF 2.6 4区 化学 Q3 POLYMER SCIENCE Journal of Polymer Research Pub Date : 2024-10-24 DOI:10.1007/s10965-024-04172-4
Yang Yu, Wanrong Liu, Qi Yue, Dalong Zhao, Xiaofeng Liu, Xiaofeng He, Bo Wen, Ning Liu, Tiejun Ge
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Abstract

Poly(butylene adipate-L-lactide-butylene terephthalate) (PBLAT) was synthesized via a two-step method using terephthalic acid (PTA), adipic acid (AA), 1,4-butanediol (BDO), and L-lactide (L-LA) as polymerization monomers. The structure and properties of PBLAT affected by the content of L-LA were characterized by FTIR, 1 H-NMR, 13 C-NMR, GPC, XRD, DSC, and TG. The FTIR and NMR analyses confirmed that the structure of PBLAT conformed to the intended molecular design. GPC results showed that the number-average molecular weight (\(\stackrel{-}{{M}_{n}}\)) of PBLAT was between 13,026 and 23,246. The contact angle of all samples was less than 70°, demonstrating that the addition of L-LA enhanced the hydrophilicity of samples. DSC results showed that with an increase in L-LA content, the glass transition temperature (Tg) of PBLAT increased gradually, and the crystallinity initially increased before decreasing, which was consistent with the results of XRD. The highest 5% weight loss temperature of PBLAT was 343.0 °C, indicating that PBLAT has good thermal stability.

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聚(己二酸丁二醇酯-L-内酯-对苯二甲酸丁二醇酯)的合成与表征
以对苯二甲酸(PTA)、己二酸(AA)、1,4-丁二醇(BDO)和 L-内酰胺(L-LA)为聚合单体,通过两步法合成了聚(己二酸丁二醇酯-L-内酰胺-对苯二甲酸丁二醇酯)(PBLAT)。傅立叶变换红外光谱、1 H-核磁共振、13 C-核磁共振、GPC、XRD、DSC 和 TG 表征了受 L-LA 含量影响的 PBLAT 结构和性能。傅立叶变换红外光谱和核磁共振分析证实,PBLAT 的结构符合预期的分子设计。GPC 结果显示,PBLAT 的数均分子量(\(\stackrel{-}{M}_{n}}\)介于 13,026 和 23,246 之间。所有样品的接触角都小于 70°,这表明添加 L-LA 增强了样品的亲水性。DSC 结果表明,随着 L-LA 含量的增加,PBLAT 的玻璃化转变温度(Tg)逐渐升高,结晶度先升高后降低,这与 XRD 的结果一致。PBLAT 的最高 5% 失重温度为 343.0 ℃,表明 PBLAT 具有良好的热稳定性。
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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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