Self-sorting Polymer Reactors And Their Sortable Catalytic Ability

Catalysis is the cornerstone of the modern chemical industry. The realization of modulatable catalytic process is the urgent demand of the developing times. The appearance of the new concept catalyst, based on poly-N-isoprop /metal nanoparticles, has created conditions for realizing this demand. Unfortunately, in practical catalytic systems, the reactants should be added in sequence to make sure that the reactions process in the pre-controlled directions to avoid the undesirable side reactions. Based on the present reports, human beings are unable to realize self-sorting reactions, so new technologies as well as new methods should be employed to develop polymer reactors with wide applicable range and high-level intelligence. In this study, a new design idea, integrating self-assemble and hierarchical scope in one single preparation processt, was employed to prepare two types of polymer reactors.Firstly, a supramolecular system containing three components(poly-1-vinylimidazole, poly-2-trifluoromethyl acrylic acid, and polyacrylamide) was constructed based on the interactions between components in self-shealing polymers. Using metal nanoparticles as active species and co-polymer as support, a smart catalyst was developed with variable substrate access venues and hierarchical response ability. The catalyst exhibited no catalytic active at low temperature because the channels were blocked owing to the presence of the interactions between the components. At moderate temperatures, the relatively weak interaction between poly-2-trifluoromethyl methacrylic acid – and polyacrylamide was destroyed, allowing substrate with small sizes accessing. While at higher temperatures, the relatively strong poly-2-trifluoromethyl methacrylic acid- poly-1-vinylimidazole interaction is destroyed, the reactor also exhibit high reactivity to macromolecular substrates.In this way, this catalytic polymer reactor shows the hierarchical catalytic ability.In addition, the research also introduce the concept of shape memory polymer reversible phase reactor design and synthesis, development of the mobile phase scope to build hierarchical classification polymerization reactor. The polymer reactor consists of functional monomer 2- octyl acid, 1-vinylimidazole and methacrylic acid copolymer, building classifiers catalytic domain. Using metal nanoparticles as active species and copolymer as support. At low temperatures, due to the electrostatic interaction between the three components and poly-2-octyl acid long molecular chain movement "freezing", synthetic polymer substrates reactor inhibited channel leading to the active ingredient, reactor does not exhibit significant catalytic activity. At moderate temperatures, electrostatic destruction of the hydrophilic substrate to obtain a channel leading to the reactor, so that polymer reactor exhibit hydrophilic substrate significant catalytic activity. At higher temperatures, the hydrophobic molecular chains increasing liquidity, polymer reactor is in the fully open state, the hydrophobic substrate also obtain access to the active species. In this manner, the hierarchical scope granted polymerization reactor classification catalytic.