Abstract

Potential effect of the proportionality between Aerosil^®R812S over the water on the formation of water entrapped self-assembly core-shell structure is the main aim of this studies. Self-assembly hydrophobic silica particle (SAHS) containing water was fabricated by abruptly incorporation of water into R812S. Five different weight percent of R812S were investigated in terms of the ability to form SAHS including their physical stability. The lowest ratio of 1% was not able to form SAHS. More than 2 up to 5% of R812S yielded core-shell structure of SAHS in the dry solid form. The smaller size of SAHS would be the result of higher level of R812S used. The finer the water droplet the more consume the silica particle used in order to gain stable SAHS. In terms of stability, they disclosed unacceptable qualities at 6 months of storage due to either remarkable phase separation or squeezing out of inner water core. It should be due to the thermodynamic driven forces that accelerated the movement of both water and silica shell to coalesce. In conclusion, the stable SAHS comprised of sufficient amount of R812S (more than 2% by weight) with water. It could be kept within short term period with acceptable properties.

摘要

Aerosil ^®之间比例的潜在影响R812S过水对形成包水自组装核壳结构是本研究的主要目的。通过将水突然掺入 R812S 中制备了含水的自组装疏水二氧化硅颗粒 (SAHS)。根据形成 SAHS 的能力，包括它们的物理稳定性，研究了五种不同重量百分比的 R812S。1% 的最低比率无法形成 SAHS。超过 2% 至 5% 的 R812S 以干燥固体形式产生 SAHS 的核壳结构。SAHS 的较小尺寸将是使用较高水平的 R812S 的结果。水滴越细，为获得稳定的 SAHS 而消耗的二氧化硅颗粒就越多。在稳定性方面，由于显着的相分离或从内部水核中挤出，他们在 6 个月的储存中发现了不可接受的质量。这应该是由于热力学驱动力加速了水和二氧化硅壳的运动以聚结。总之，稳定的 SAHS 包含足量的 R812S（超过 2% 的重量）和水。它可以在短期内保持可接受的性能。