合成了具有各种N3取代基(包括甲基,丁基,庚基,十二烷基,异丙基和二苯基甲基)的咪唑阳离子,并对其碱性稳定性进行了研究。通过定量1 H NMR光谱和密度泛函理论(GGA-BLYP)计算研究了N3取代基对碱稳定性的影响。具有最高LUMO能量值的异丙基取代的咪唑鎓阳离子([DMIIm] +)在NaOH水溶液中具有最高的碱稳定性。在CD 3 OD / D 2中,[DMIIm] +阳离子还比季铵阳离子苄基三甲基铵([BTMA] +)具有更高的碱稳定性。O NaOH溶液在高温下。该观察结果启发了基于[DMIIm] +的碱性阴离子交换膜(AEMs)的制备,该膜在碱性溶液中显示出较高的碱性稳定性。
[EN] IONIC LIQUID SYSTEMS FOR THE PROCESSING OF BIOMASS, THEIR COMPONENTS AND/OR DERIVATIVES, AND MIXTURES THEREOF<br/>[FR] SYSTÈMES LIQUIDES IONIQUES POUR LE TRAITEMENT DE BIOMASSE, LEURS COMPOSANTS ET/OU DÉRIVÉS, ET LEURS MÉLANGES
申请人:UNIV ALABAMA
公开号:WO2010056790A1
公开(公告)日:2010-05-20
Disclosed herein are compositions and methods that involve ionic liquids and biomass. In one aspect, the disclosure relates to ionic liquid systems for the processing of biomass, their components and/or derivatives, and mixtures thereof.
[EN] IMPACT RESISTANT ADHESIVE<br/>[FR] ADHÉSIF RÉSISTANT AUX CHOCS
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2019159080A1
公开(公告)日:2019-08-22
A pressure sensitive adhesive composition includes a (co)polymer derived from polymerization of monomers comprising (i) one or more (meth)acrylic acid ester monomers; (ii) one or more acid functional ethylenically unsaturated monomers; and (iii) one or more non-acid functional, ethylenically unsaturated polar monomers. The (co)polymer comprises (i) derived units in an amount of between 80 and 96 wt. %, (ii) derived units in an amount of between 1 and 12 wt. %, and (iii) derived units in an amount of between 0.1 and 10 wt. %, each based the total weight of the (co)polymer.