有机硅包覆马来海松酸缩水甘油酯型环氧树脂微胶囊的制备及表征(英文)  

Preparation and Characterization of a Novel Microcapsule from Silica Encapsulating Maleopimaric Acid Glycidyl Ester Type Epoxy Resin by Sol-gel Process

作　　者：林广沅[1,2,3,4] 吴国民[1,2,3,4] 孔振武[1,2,3,4] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042

出　　处：《林产化学与工业》2013年第3期17-23,共7页Chemistry and Industry of Forest Products

基　　金：国家林业局林业公益性行业专项(201104031)

摘　　要：以马来海松酸缩水甘油酯(MPTGE)为囊芯材料,正硅酸四乙酯(TEOS)为囊壁材料,采用溶胶-凝胶法制备了一种新型的有机硅包覆环氧树脂微胶囊。分别利用扫描电镜(SEM)、透射电镜(TEM)、光学显微镜(OM)、傅里叶红外光谱仪(FT-IR)、粒径分析仪及热重分析仪(TG)对微胶囊的外貌形态、结构、粒径分布及热稳定性进行了表征。研究表明,有机硅对环氧树脂芯材形成了有效的包覆,制备的微胶囊表面光滑致密,粒径分布较窄,平均粒径为8.4μm,热稳定性较好,芯材质量分数58%。A novel microcapsule was prepared from silica encapsulating maleopimaric acid glycidyl ester type epoxy resin （MPTGE） by sol-gel process in a surfactant stabilized O/W emulsion. In these micro-capsules system, MPTGE was used as the core material, and SiO2 acted as the shell material that was formed via hydrolysis and subsequent polycondensation of tetraethyl silicate （TEOS） in the presence of hydrochloric acid （HC1） as catalyst. The morpholo- gy, chemical structure, particle size and thermal stability, core material content of microcapsules were characterized by scanning electronic microscope （SEM）, transmission electronic microscope （TEM）, opt!~a1 microscope （OM）, Fourier transformation in- flared spectroscope （FT-IR）, zeta size analyzer and thermo gravimetric analyzer （TG）, respectively. FF-IR analysis confirmed that the silica shell material was successfully fabricated onto the surface of the MPTGE core. Zeta images suggested that these mi- crocapsules presented a very small size and the mean diameter was 8.4 p,m. SEM and OM photographs showed that the microcap- sules exhibited a spherical morphology with a well-defined core-shell microstructure and the surfaces of microcapsules were very smooth and compact. The TG curves illustrated that these microcapsules presented good thermal stability, and the core material content was about 58 % by weight. All these results demonstrated that the microcapsules from silica encapsulating MPTGE were successfully prepared.

关 键 词：马来海松酸 环氧树脂 有机硅 溶胶-凝胶法 微胶囊 

分 类 号：TQ35[化学工程]