The effect of traveling microwave irradiation on the crystallinities of CdS nanoparticles and Bi2S3 nanorods was studied. Results showed that as compared with stationary microwave irradiation the crystallinities and t...The effect of traveling microwave irradiation on the crystallinities of CdS nanoparticles and Bi2S3 nanorods was studied. Results showed that as compared with stationary microwave irradiation the crystallinities and the crystal growth of sulfide nanoparticles were improved. Traveling microwave irradiation can supply narrower frequency distribution and stronger power density of irradiation, CdSnanoparticles and Bi2S3 nanorods obtained are better in crystallinities and larger in size than under stationary microwave irradiation.展开更多
用溶剂热法制备无皂聚甲基丙烯酸甲酯(PMMA)纳米粒子,讨论了温度和丙酮含量对粒子粒径和分散度的影响,用DTA, 1HNMR, TEM, GPC等对产物进行了表征。结果表明无皂PMMA纳米粒子的粒径约60nm,分子量分布较好、以间同结构为主;随着反应温度...用溶剂热法制备无皂聚甲基丙烯酸甲酯(PMMA)纳米粒子,讨论了温度和丙酮含量对粒子粒径和分散度的影响,用DTA, 1HNMR, TEM, GPC等对产物进行了表征。结果表明无皂PMMA纳米粒子的粒径约60nm,分子量分布较好、以间同结构为主;随着反应温度增高,PMMA的玻璃化温度增加,间同结构含量有所增大,纳米粒子的粒径逐渐减小,粒径分布变差;溶剂中丙酮含量增加时,粒径逐渐减小,粒径的分布变差。展开更多
文摘The effect of traveling microwave irradiation on the crystallinities of CdS nanoparticles and Bi2S3 nanorods was studied. Results showed that as compared with stationary microwave irradiation the crystallinities and the crystal growth of sulfide nanoparticles were improved. Traveling microwave irradiation can supply narrower frequency distribution and stronger power density of irradiation, CdSnanoparticles and Bi2S3 nanorods obtained are better in crystallinities and larger in size than under stationary microwave irradiation.
文摘用溶剂热法制备无皂聚甲基丙烯酸甲酯(PMMA)纳米粒子,讨论了温度和丙酮含量对粒子粒径和分散度的影响,用DTA, 1HNMR, TEM, GPC等对产物进行了表征。结果表明无皂PMMA纳米粒子的粒径约60nm,分子量分布较好、以间同结构为主;随着反应温度增高,PMMA的玻璃化温度增加,间同结构含量有所增大,纳米粒子的粒径逐渐减小,粒径分布变差;溶剂中丙酮含量增加时,粒径逐渐减小,粒径的分布变差。
