微晶纤维素/天然橡胶复合材料的制备及性能研究

Preparation and Properties of MCC/NR Composite

将微晶纤维素(MCC)碱尿素溶液与天然胶乳混合,通过MCC原位析出,制备出MCC/天然橡胶(NR)复合材料,并对其性能进行研究。结果表明:原位析出的MCC可以有效增大MCC/NR复合材料的硬度和拉伸强度;MCC颗粒的尺寸和形态不均一,小尺寸的MCC颗粒与NR基体结合较好,MCC颗粒形态除球形和棒状外,还有纤维状。

In this work,the alkali urea solution of microcrystalline cellulose(MCC) was mixed with natural latex,then the MCC/natural rubber(NR) composite was prepared with in-situ precipitation of MCC,and the properties of the composite were studied. The results showed that,in-situ precipitated MCC could effectively improve the hardness and tensile strength of MCC/NR composite. However,the size and morphology of MCC were not uniform. The interfacial adhesion between small size MCC particles and NR matrix was good. It was found that the shapes of MCC particles were spherical,rodlike,and fibrous.