静电纺丝法制备溴化丁基橡胶纤维膜及其性能研究

发布时间：2018-01-21 05:46

本文关键词： 静电纺丝溴化丁基橡胶形貌性能测试抗菌性能　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：静电纺丝技术是一种制备微/纳米结构纤维的技术。通常这种纤维的直径要比普通溶液或熔融纺丝得到的纤维直径小1~2个数量级。当物质的尺寸在微纳米层次时,就会显现出一些独特的性质,例如:超大的比表面积、特殊的光电学性质等。近年来,由于静电纺丝技术在组织工程、过滤、选择性吸附和药物缓释等领域的前景,使得其成为国内外研究热点。溴化丁基橡胶是丁基橡胶的衍生物,因此其具有丁基橡胶相似的物理和化学性质。此外,溴化丁基橡胶还具有一些独特的性质,如硫化速率快、热稳定性高、和其他橡胶的相容性高等。目前,溴化丁基橡胶主要用于子午胎和医用橡胶瓶塞,其生产厂家希望通过静电纺丝技术开发溴化丁基橡胶在其他领域的应用。溴化丁基橡胶的玻璃化温度低,在常温下,其电纺纤维分子链之间缠结回缩能力非常强,导致纤维结构容易坍塌,所以对静电纺橡胶的研究是比较少的,而对其应用方面的研究就更少了。本研究使用静电纺丝技术成功制备出溴化丁基橡胶纤维膜,并对其制备工艺以及性能进行了研究。研究成果如下:选用牌号为2302的溴化丁基橡胶;溶剂为四氢呋喃;聚合物溶液浓度为10%且溶液黏度在126mPa·s附近;静电电压在15kV附近;注射速度和接收距离分别为0.1mm/min和20cm;选用硬脂酸锌作为隔离剂且其用量为8%时,得到表面形貌良好且孔洞结构良好的溴化丁基橡胶纤维膜,且当在铝箔上涂一层薄薄的硬脂酸锌时,纤维膜很容易剥离下来。将一些具备抗菌或导电性能的填料加入到聚合物溶液中,并通过静电纺丝技术成功制备出表面形貌且孔洞结构良好溴化丁基橡胶纤维膜。结果表明:溴化丁基橡胶纤维膜具有本征性的抗菌能力,当碳纳米管的添加量为10wt%时,溴化丁基橡胶纤维膜导电,且纤维膜的力学性能得到了一定的提高。为溴化丁基橡胶纤维膜在医药敷料、导电绷带、传感器、过滤等领域的应用打下了良好的基础。
[Abstract]:Electrospinning is a technique for preparing micro / nanostructured fibers. The diameter of this fiber is usually 1 to 2 orders of magnitude smaller than that obtained by ordinary solution or melt spinning. The second time. It will show some unique properties, such as: large specific surface area, special photoelectric properties, etc. In recent years, because of electrostatic spinning technology in tissue engineering, filtration. Because of the prospect of selective adsorption and drug sustained release, brominated butadiene rubber is a derivative of butyl rubber, so it has similar physical and chemical properties. Brominated butyl rubber also has some unique properties, such as high curing rate, high thermal stability and high compatibility with other rubber. At present, brominated butyl rubber is mainly used for radial tire and medical rubber bottle stoppers. The manufacturer hopes to develop the application of brominated butyl rubber in other fields through electrostatic spinning technology. The glass transition temperature of brominated butyl rubber is low and it is at room temperature. The molecular chains of electrospun fibers have very strong tangle and retraction ability, which leads to the collapse of the fiber structure, so the research on the electrostatic spinning rubber is less. In this study, the application of brominated butadiene rubber fiber membrane was successfully prepared by using electrostatic spinning technology. The preparation process and properties were studied. The research results are as follows: select the brand of 2302 brominated butyl rubber; The solvent is tetrahydrofuran; The concentration of polymer solution is 10% and the viscosity of the solution is about 126mPa 路s; The electrostatic voltage is about 15kV; The injection speed and the receiving distance were 0.1 mm / min and 20 cm respectively. When zinc stearate was used as the isolator and the dosage was 8%, the brominated butadiene rubber fiber film with good surface morphology and good pore structure was obtained, and when a thin layer of zinc stearate was coated on the aluminum foil, a thin layer of zinc stearate was obtained. It is easy to peel off the fiber membrane. Some fillers with antibacterial or conductive properties are added to the polymer solution. The surface morphology and pore structure of brominated butadiene rubber fiber membrane were successfully prepared by electrospinning technology. The results showed that the brominated butyl rubber fiber film had intrinsic antibacterial ability. When the content of carbon nanotubes was 10 wt%, the BBR fiber membrane was conductive, and the mechanical properties of the fiber membrane were improved to a certain extent. The film was used in medical dressing and conductive bandage. Sensor, filtering and other applications have laid a good foundation.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ340.64

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