Hybrid free-radical and cationic photo-polymerization of bio-based monomers derived from seed oils – control of competitive processes by experimental design,Polymer Chemistry

当前位置： X-MOL 学术 › Polym. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Hybrid free-radical and cationic photo-polymerization of bio-based monomers derived from seed oils – control of competitive processes by experimental design
Polymer Chemistry ( IF 4.1 ) Pub Date : 2020-07-21 , DOI: 10.1039/d0py00773k
Gabriela Tataru _{1,

2,

3,

4,

5} , Xavier Coqueret _{1,

2,

3,

4,

5}

Affiliation

Hybrid photopolymerization processing by concomitant cationic and free radical mechanisms was investigated from a basic viewpoint for elaborating polymer networks from mixtures of multifunctional epoxy and acrylate monomers derived from seed oils, namely epoxy linseed oil (ELO) and acrylated epoxidized soybean oil (AESO). The influence of monomer composition and processing parameters controlling the properties of UV-cured films was studied by experimental design (ED) methodology. UV-curable formulations including ELO and AESO were prepared with different concentrations of a photo-initiator system including a diaryliodonium salt, a thioxanthone photosensitizer and isopropanol as a H-donor. A deconvolution method was applied to FTIR spectra for quantifying separately the progress of acrylate and epoxy polymerization at 1406 and 830 cm⁻¹, respectively. The efficiency of the photo-initiator system was studied by means of Scheffé's mixture design. The obtained data reveal that the polymerization rates of the two monomers are strongly influenced by the ratio of isopropyl thioxanthone with respect to the iodonium salt. The predicting model was used for preparing hybrid networks with different microstructures and specific thermomechanical properties.

中文翻译：

种子油衍生的生物基单体的混合自由基和阳离子光聚合-通过实验设计控制竞争过程

从基本观点出发，研究了通过伴随阳离子和自由基机理进行的杂化光聚合处理，以从衍生自种子油的多官能环氧和丙烯酸酯单体（环氧亚麻籽油（ELO）和丙烯酸化环氧化大豆油（AESO））的混合物中精制聚合物网络。通过实验设计（ED）方法研究了单体组成和工艺参数对控制UV固化膜性能的影响。用不同浓度的光引发剂体系制备了包括ELO和AESO在内的可紫外线固化的制剂，该体系包括二芳基碘鎓盐，噻吨酮光敏剂和异丙醇作为H供体。将解卷积方法应用于FTIR光谱以分别量化丙烯酸酯和环氧聚合在1406和830 cm处的进展^-1。通过Scheffé的混合物设计研究了光引发剂系统的效率。所得数据表明，两种单体的聚合速率受异丙基噻吨酮相对于碘鎓盐的比率的强烈影响。该预测模型用于制备具有不同微观结构和特定热机械性能的混合网络。

更新日期：2020-08-11

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11