摘要:
The invention provides novel porous materials that are useful in chromatographic processes, e.g., solid phase extraction, and that provide a number of advantages. Such advantages include superior wetting characteristics, selective capture of analytes of interest, and non-retention of interfering analytes. The invention advantageously provides novel porous materials having a large percentage of larger pores (i.e. wide pores). The invention advantageously provides novel porous materials that overcome the problems of SPE of biological samples.
摘要:
Biologically activated ion-exchange polymer salts are made by exchanging biologically active ionic agents onto ion-exchange polymers. The activated polymers are uniquely surface active and stable to thermal degradation and chemical and other forms of decomposition. The activated ion-exchange polymer salts may be processed and combined with polymer precursors using novel methods and materials to produce stable, biologically activated polymer composites, including antimicrobial and antifouling polymer composites.
摘要:
Embodiments of the invention relate generally to anion exchange membranes and, more particularly, to anion exchange membranes comprising a styrene block copolymer and methods for their manufacture. In one embodiment, the invention provides a polymer according to formula IV, wherein x and y are mol %, QA is or each of R1 and R2 is, independently, a linear alkyl chain or a cyclic alkyl chain, and Z is selected from a group consisting of: a linear alkyl chain, a cyclic alkyl chain, and an alkylene ether chain.
摘要:
Provided is an anion-exchange membrane including: a substrate composed of a film of ultrahigh molecular weight polyolefin; and a graft chain having the following structural unit.
L 1 to L 5 are each independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkanol group having 1 to 4 carbon atoms, or a specific functional group including an anion-exchange group, and an example of the functional group is -Z 2 -M 1 -Z 1 (R 1 )(R 2 )(R 3 ). R 1 to R 3 are directly bonded to Z 1 and are each independently an alkyl group having 1 to 8 carbon atoms or an alkanol group having 1 to 8 carbon atoms. M 1 is a linear hydrocarbon chain having 3 to 8 carbon atoms, Z 1 is a nitrogen atom or a phosphorus atom, and Z 2 is a nitrogen atom bonded to one hydrogen atom, an oxygen atom, or a sulfur atom. L 6 is a hydrogen atom, a methyl group, or an ethyl group.
摘要翻译:本发明提供一种阴离子交换膜,其包含:由超高分子量聚烯烃膜构成的基板; 和具有以下结构单元的接枝链。 L1〜L5各自独立地为氢原子,碳原子数为1〜4的烷基,碳原子数为1〜4的烷醇基或包含阴离子交换基团的特定官能团,官能团的一例为 -Z2-M1-Z1(R1)(R2)(R3)。 R1至R3直接键合至Z1,并且各自独立地为具有1至8个碳原子的烷基或具有1至8个碳原子的烷醇基。 M 1为具有3至8个碳原子的直链烃链,Z 1为氮原子或磷原子,并且Z 2为键合至一个氢原子,氧原子或硫原子的氮原子。 L 6是氢原子,甲基或乙基。