Abstract

In this work, a new series of bio-based poly(ɛ-caprolactone)s (SBO-PCLs) is synthesized through ring-opening polymerization (ROP) of ɛ-caprolactone (ɛ-CL) using stannous octoate as a catalyst and hydroxylated soybean oil (SBO-OH) as a macro-initiator. For this purpose, firstly, epoxy groups of epoxidized soybean oil (ESBO) are converted to hydroxyl functionalities to be used for ROP of ɛ-CL. Then, after the ROP of ɛ-CL using SBO-OH; wettability, biodegradability and thermal properties of the obtained SBO-PCLs are evaluated in terms of loading ratio of ɛ-CL monomer ([OH]/[ɛ-CL] (n/n) = 1:0.5; 1:1 and 1:2). The obtained SBO-PCLs and their intermediates are characterized by Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance spectroscopy (¹H-NMR), gel permeation chromatography (GPC), water contact angle measurement (WCA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and enzymatic degradation experiment. SBO-PCL with higher PCL molar ratio shows the lower biodegradability, but higher hydrophobicity and thermal properties compared to others. Thus, it is clear that the successful syntheses of SBO-PCLs encourage the use of these polymers as promising materials for scientists working on PCL applications.

中文翻译：

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大豆油衍生多元醇通过开环聚合制备生物基聚（ε-己内酯）

摘要

在这项工作中，使用辛酸亚锡作为催化剂，通过ɛ-己内酯（ɛ-CL）的开环聚合（ROP），合成了一系列新的生物基聚ɛ-己内酯（SBO-PCL）。大豆油（SBO-OH）作为大分子引发剂。为此目的，首先，将环氧化大豆油（ESBO）的环氧基转化为羟基官能团以用于α-CL的ROP。然后，在S-CL的ROP之后使用SBO-OH; 根据α-CL单体的负载比（[OH] / [α-CL]（n / n）= 1：0.5; 1：1和1：1）评估所得SBO-PCL的润湿性，生物降解性和热性能。 2）。所获得的SBO-PCL及其中间体通过傅里叶变换红外光谱（FT-IR），质子核磁共振光谱（¹H-NMR），凝胶渗透色谱（GPC），水接触角测量（WCA），热重分析（TGA），差示扫描量热法（DSC）和酶促降解实验。具有较高PCL摩尔比的SBO-PCL与其他相比具有较低的生物降解性，但具有较高的疏水性和热性能。因此，很明显，成功合成SBO-PCL鼓励了将这些聚合物用作从事PCL应用的科学家的有前途的材料。