High moisture permeable cellulose diacetate films by reactive polyethylene glycol plasticizers

IF 2.6 4区化学 Q3 POLYMER SCIENCE Journal of Polymer Research Pub Date : 2024-11-21 DOI:10.1007/s10965-024-04192-0

Peipei Wu, Yuchang Zhao, Yuwen Zhang, Qingyue Shen, Shuaishuai Hu, Shuangjun Chen

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Abstract

Intrinsic moisture permeability of bio-based polymer cellulose diacetate (CDA) is not sufficient for some requirements. Herein, isophorone diisocyanate (IPDI) modified polyethylene glycol (IPEG200) was served as a reactive plasticizer to enhance the water vapor permeability (WVP) of CDA films without plasticizer migration problems. The performances of CDA films were further improved by adding hydrophilic nanometer Al₂O₃ fillers. Fourier transform infrared spectroscopy (FTIR) was used to the synthesis processes of the prepolymers and their reaction with CDA chains. The crosslinking reaction was indicated by monitoring the gel content. When IPEG200 is 9.66 phr and Al₂O₃ filler is 5 phr, the WVP is raised to 8.9 × 10⁻¹³ g·cm/cm²·s·Pa, which is much higher than CDA’s. WVP 14.2 × 10⁻¹³ g·cm/cm²·s·Pa of CDA film can be obtained by adding 60 phr PEG600 and 25 phr Al₂O₃ when using IPEG200 as the compatibilizer. This study provides a simple, feasible, low-cost method for preparing high moisture permeable film by reactive plasticizers.

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利用活性聚乙二醇增塑剂制造高透湿性二醋酸纤维素薄膜

生物基聚合物二醋酸纤维素（CDA）的内在透湿性不足以满足某些要求。在此，异佛尔酮二异氰酸酯（IPDI）改性聚乙二醇（IPEG200）被用作活性增塑剂，以提高 CDA 薄膜的水蒸气渗透性（WVP），而不会产生增塑剂迁移问题。通过添加亲水性纳米 Al2O3 填料，进一步提高了 CDA 薄膜的性能。傅立叶变换红外光谱（FTIR）被用于研究预聚物的合成过程及其与 CDA 链的反应。交联反应是通过监测凝胶含量来显示的。当 IPEG200 为 9.66 phr 和 Al2O3 填料为 5 phr 时，WVP 升至 8.9 × 10-13 g-cm/cm2-s-Pa，远高于 CDA。当使用 IPEG200 作为相容剂时，加入 60 phr PEG600 和 25 phr Al2O3 可获得 CDA 薄膜的 14.2 × 10-13 g-cm/cm2-s-Pa WVP。这项研究为利用反应性增塑剂制备高透湿性薄膜提供了一种简单、可行、低成本的方法。

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来源期刊

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.