Photoinduced polymerization of acrylates with polybenzoxazine macroinitiators for polyacrylate/polybenzoxazine networks

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED Reactive & Functional Polymers Pub Date : 2024-09-12 DOI:10.1016/j.reactfunctpolym.2024.106054

Dilara Onen, Fusun Seyma Gungor, Baris Kiskan

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Abstract

In this study, we synthesized benzophenone-based main chain polybenzoxazine (BP-PBz) as a type II macroinitiator and this initiator was used to synthesize acrylate-based polybenzoxazine copolymers. BP-PBz effectively initiated the polymerization of methyl methacrylate (MMA) and poly(ethylene glycol) diacrylate (PEGDA), resulting in either polybenzoxazine-grafted-poly(MMA) or crosslinked polybenzoxazine networks. Polymerizations of the formulations were performed upon photolysis at ca. 300 nm. The obtained polymers retained their oxazine functionality and subsequent thermal curing was applied successfully at relatively lower temperatures than conventional benzoxazines. The precursors are shown to have a dual curable character that could be beneficial for deep curing purposes. The synthesized polymers were characterized using various techniques, including nuclear magnetic resonance (NMR), Fourier-transform infrared (FT-IR), ultraviolet-visible (UV–Vis) spectroscopy, and thermogravimetric analysis (TGA), along with differential scanning calorimetry (DSC).

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丙烯酸酯与聚苯并噁嗪大引发剂的光诱导聚合，用于聚丙烯酸酯/聚苯并噁嗪网络

在这项研究中，我们合成了二苯甲酮基主链聚苯并恶嗪（BP-PBz）作为 II 型大引发剂，并用这种引发剂合成了丙烯酸酯基聚苯并恶嗪共聚物。BP-PBz 能有效引发甲基丙烯酸甲酯（MMA）和聚乙二醇二丙烯酸酯（PEGDA）的聚合，从而生成聚苯并恶嗪接枝聚（MMA）或交联聚苯并恶嗪网络。这些配方在约 300 纳米波长的光解条件下进行聚合。300 纳米处进行聚合。与传统的苯并恶嗪相比，所获得的聚合物保留了其恶嗪官能团，并在相对较低的温度下成功地进行了后续热固化。这些前体具有双重固化特性，有利于深度固化。合成聚合物的表征采用了多种技术，包括核磁共振（NMR）、傅立叶变换红外光谱（FT-IR）、紫外可见光谱（UV-Vis）、热重分析（TGA）以及差示扫描量热法（DSC）。

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.