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采用界面自组装聚合的方法,成功地制备出聚糠醛纳米球,利用TEM,FT-IR,XRD,GPC及TG-DTA等技术对其形貌、结构等进行了表征,并考查了单体浓度、催化剂用量以及乳化剂的存在与否对聚糠醛形貌等的影响.结果表明,由该方法合成的聚糠醛为不规则的结晶结构,当乳化剂浓度在临界胶束浓度cmc附近、单体浓度在3～5mol·L-1、催化剂的用量在10mol·L-1左右时,能够得到成球性好、粒径分布范围窄、平均尺寸在100nm左右的聚糠醛纳米球结构材料.利用该法在上述优化条件下合成的聚糠醛的Mw=2451,Mw/Mn=1.14,且分子量分布窄.聚糠醛分子链的柔韧性较强,具有很好的加工性能.该法具有合成条件温和、易于控制、纯化简单等众多优点,而且省去了使用模板/消除模板的过程,能够一步合成出大量聚糠醛纳米球.
Polyfurfural nanospheres were successfully prepared by interfacial self-assembly polymerization. Their morphology and structure were characterized by TEM, FT-IR, XRD, GPC and TG-DTA. The monomer concentration , The amount of catalyst and the presence or absence of emulsifier on the morphology of polyfurfural were investigated.The results showed that the polyfurfural synthesized by this method was an irregular crystal structure.When the concentration of emulsifier was near the critical micelle concentration cmc, When the concentration of catalyst is 3 ~ 5mol·L-1 and the amount of catalyst is about 10mol·L-1, a polyfurfural nanosphere structure material with good sphericity, narrow particle size distribution and average size of about 100nm can be obtained. Under the optimized conditions, the polyfurfural synthesized by the above method has Mw = 2451, Mw / Mn = 1.14 and narrow molecular weight distribution.The polyfurfural molecular chain is more flexible and has good processability.The method has the advantages of mild synthesis conditions, Easy to control, simple purification, and many other advantages, but also eliminates the need for the use of templates / template elimination process, to synthesize a large number of poly furfural nanospheres.