渗透汽化分离技术是实现生物丁醇产业化的关键技术之一。传统基于热交联法制备聚二甲基硅氧烷（PDMS）膜工艺所需固化时间长(24h)，导致膜制备效率低且不能连续化生产；构建超快速PDMS膜制备路线和探究其成膜机制，是生物丁醇高效分离研究的关键科学问题。本项目创新性地提出一种新型基于光固化的PDMS膜制备路线设计和膜结构调控方法。揭示光响应型PDMS交联过程中膜结构秒级快速形成的内在本质特征，探究其超快速固化的成膜机制，构建基于“Freezing”效应的PDMS混合基质膜制备新策略。研究PDMS/纳米粒子/光响应基团之间相互作用与协调所引起的膜结构突变过程，探寻混合基质膜制备过程中诱发选择性分离孔向纳米粒子团聚孔突变的边界条件。挖掘PDMS光固化动力学与纳米粒子团聚行为之间最优适配的“Freezing”效应，揭示混合基膜对生物丁醇分离的构效关系。为高性能混合基质膜的超快速制备和设计提供理论指导。

Pervaporation separation technique plays an important role in the biobutanol industrialization. Generally, at least 24 hours are needed to cure polydimethylsiloxane (PDMS) when the traditional thermal crosslinking method is used, which results in poor membrane preparation efficiency. Ii is also impossible for continuous preparation of PDMS membrane due to the long curing time. The key scientific problems on biobutanol separation are ultrafast preparation of PDMS membrane and its corresponding formation mechanism. In this project, PDMS membrane will be prepared by a photo-crosslinking method, and how to control its membrane structure will also be studied. The essence of the ultrafast membrane-structure formation using photosensitive PDMS will also be revealed. And its ultrafast membrane formation mechanism will be studied. The novel method for preparation of mixed matrix membranes (MMMs) will be set up based on “Freezing” effect. Interaction and coordination, which cause mutation in membrane structure, among PDMS, nanoparticle and photosensitive groups will be investigated. The boundary condition that induces membrane structure from selective pore to aggregation-inducing hole will also be investigated. The intrinsic characteristics resulting in “Freezing” between photo-crosslinking kinetic and nanoparticles aggregation will be explored. The relationship between structure and performance of MMMs will be revealed. The results will provide theoretical guidance for design and ultrafast preparation of MMMs with high separation performance for bio-butanol.