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全生物基交联淀粉油酸酯薄膜的合成与性能

Synthesis and Properties of Fully Biobased Crosslinked Starch Oleate Films.

作者信息

Boetje Laura, Lan Xiaohong, van Dijken Jur, Polhuis Michael, Loos Katja

机构信息

Zernike Institute of Advanced Materials, University of Groningen, Nijenbogh 4, 9747AG Groningen, The Netherlands.

Royal Avebe U.A., Zernikelaan 8, 9747AA Groningen, The Netherlands.

出版信息

Polymers (Basel). 2023 May 26;15(11):2467. doi: 10.3390/polym15112467.

DOI:10.3390/polym15112467
PMID:37299266
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10255509/
Abstract

Starch oleate (degree of substitution = 2.2) films were cast and crosslinked in the presence of air using UV curing (UVC) or heat curing (HC). A commercial photoinitiator (CPI, Irgacure 184) and a natural photoinitiator (NPI, a mixture of biobased 3-hydroxyflavone and n-phenylglycine) were used for UVC. No initiator was used during HC. Isothermal gravimetric analyses, Fourier Transform Infrared (FTIR) measurements, and gel content measurements revealed that all three methods were effective in crosslinking, with HC being the most efficient. All methods increased the maximum strengths of film, with HC causing the largest increase (from 4.14 to 7.37 MPa). This is consistent with a higher degree of crosslinking occurring with HC. DSC analyses showed that the signal flattened as film crosslink densities increased, even disappearing in the case of HC and UVC with CPI. Thermal gravimetric analyses (TGA) indicated that films cured with NPI were least affected by degradation during curing. These results suggest that cured starch oleate films could be suitable for replacing the fossil-fuel-derived plastics currently used in mulch films or packaging applications.

摘要

在空气存在的情况下，使用紫外线固化（UVC）或热固化（HC）法浇铸并交联油酸淀粉酯（取代度 = 2.2）薄膜。紫外线固化使用一种商业光引发剂（CPI，Irgacure 184）和一种天然光引发剂（NPI，一种生物基3 - 羟基黄酮和N - 苯基甘氨酸的混合物）。热固化过程中未使用引发剂。等温重量分析、傅里叶变换红外光谱（FTIR）测量和凝胶含量测量表明，所有这三种方法在交联方面都是有效的，其中热固化最为高效。所有方法都提高了薄膜的最大强度，热固化导致的强度增加最大（从4.14兆帕增加到7.37兆帕）。这与热固化发生更高程度的交联是一致的。差示扫描量热法（DSC）分析表明，随着薄膜交联密度的增加，信号变平，在使用CPI的热固化和紫外线固化情况下信号甚至消失。热重分析（TGA）表明，用NPI固化的薄膜在固化过程中受降解影响最小。这些结果表明，固化后的油酸淀粉酯薄膜可能适合替代目前用于地膜或包装应用的化石燃料衍生塑料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/f6e702f061a6/polymers-15-02467-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/f3a33063dcf2/polymers-15-02467-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/190a3b780844/polymers-15-02467-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/998d6aaae389/polymers-15-02467-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/26d8442777d4/polymers-15-02467-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/5bd21bef68a9/polymers-15-02467-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/74b058a53980/polymers-15-02467-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/9783243a3260/polymers-15-02467-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/f6e702f061a6/polymers-15-02467-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/f3a33063dcf2/polymers-15-02467-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/190a3b780844/polymers-15-02467-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/998d6aaae389/polymers-15-02467-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/26d8442777d4/polymers-15-02467-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/5bd21bef68a9/polymers-15-02467-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/74b058a53980/polymers-15-02467-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/9783243a3260/polymers-15-02467-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f88/10255509/f6e702f061a6/polymers-15-02467-g007.jpg

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