Abstract: A system for treating a source of water contaminated with PFAS is disclosed. The system includes a PFAS separation stage having an inlet fluidly connectable to the source of water contaminated with PFAS, a diluate outlet, and a concentrate outlet and a PFAS elimination stage positioned downstream of the PFAS separation stage and having an inlet fluidly connected to an outlet of the PFAS separation stage, the elimination of the PFAS occurring onsite with respect to the source of water contaminated with PFAS, with the system maintaining an elimination rate of PFAS greater than about 99%. A method of treating water contaminated with PFAS is also disclosed.

Abstract: Co-sensitizers that co-adsorb with a sensitizing dye to the surface of an interconnected semiconductor oxide nanoparticle material increase the efficiency of photovoltaic cells by improving their charge transfer efficiency and reducing the back transfer of electrons from the interconnected semiconductor oxide nanoparticle material to the sensitizing dye.

Abstract: A method for preparing a moisture-curable, virtually telechelic, silyl-functional polyisobutylene is disclosed, said method comprising reacting, in the presence of a Lewis acid, (A) isobutylene; (B) an initiator of the formula (C) a styryl comonomer of the formula wherein R is selected from H or methyl group, R′ is a divalent non-aromatic hydrocarbon group having 1 to 6 carbon atoms, R″ is independently selected from alkyl groups having 1 to 10 carbon atoms or aryl groups having 6 to 10 carbon atoms, R′″ is a divalent non-aromatic hydrocarbon group having 2 to 6 carbon atoms, X is independently a halogen group, Y is halogen and n is independently 1, 2 or 3.

Abstract: A method for preparing a moisture-curable, pseudo-telechelic, silyl-functional polyisobutylene terpolymer is disclosed, said method comprising reacting, in the presence of a Lewis acid and a solvent, (A) an isobutylene monomer; (B) a isopropenylphenyl comonomer having the formula (C) a vinylphenyl comonomer of the formula wherein R′ is a divalent non-aromatic hydrocarbon group having 2 to 6 carbon atoms, R″ is independently selected from alkyl groups having 1 to 10 carbon atoms or aryl groups having 6 to 10 carbon atoms, R is a divalent non-aromatic hydrocarbon group having 2 to 6 carbon atoms, X is independently a hydrolyzable group and n is independently 1, 2 or 3, with the proviso that rAC is greater than 1 and rAB is less than 1, wherein rAB is the reactivity ratio of said isobutylene in the presence of said comonomer (B) and said solvent and rAC is the reactivity ratio of said isobutylene in the presence of said comonomer (C) and said solvent.

Abstract: There is disclosed a method for preparing a silyl-functional living cationic polymer which can be subsequently coupled to form a moisture-curable telechelic system, said method comprising reacting, in the presence of a Lewis acid, (A) at least one cationically polymerizable monomer with (B) an initiator of the formula wherein R is selected from H or methyl group, R′ is a divalent non-aromatic hydrocarbon group having, 1 to 6 carbon atoms, R″ is selected from alkyl groups having 1 to 10 carbon atoms or aryl groups having, 6 to 10 carbon atoms, X is halogen, Y is halogen and n is 1, 2 or 3.

Abstract: There is disclosed a method for preparing a silyl-functional living cationic polymer which can be subsequently coupled to form a moisture-curable telechelic system, said method comprising reacting, in the presence of a Lewis acid,(A) at least one cationically polymerizable monomer with(B) an initiator of the formula ##STR1## wherein R is selected from alkyl groups having 1 to 10 carbon atoms or aryl groups having 6 to 10 carbon atoms, R' is a divalent aliphatic hydrocarbon group having at least 3 carbon atoms, X is halogen, Y is selected from the group consisting of halogen, alkoxy. acyloxy and hydroxyl groups and a is 1, 2 or 3.

Abstract: A method for coupling a living cationic polymer is disclosed, said method comprising reacting the living cationic polymer with an organic compound having at least 2 furan rings in its molecule, said reaction taking place in the presence of a Lewis acid. Preferably, the living cationic polymer is first prepared by polymerizing at least one monomer selected from isobutylene, isoprene or a styrenic monomer using a specific initiator, this reaction also being carried out in the presence of a Lewis acid.

Abstract: A novel initiator which may be used to prepare a silyl-functional living cationic polymer is disclosed, said initiator having the formula ##STR1## wherein R is independently selected from the group consisting of alkyl groups having 1 to 10 carbon atoms and aryl groups having 6 to 10 carbon atoms, R' is a divalent aliphatic hydrocarbon group having at least 3 carbon atoms, X is halogen, Y is selected from the group consisting of halogen, alkoxy, acyloxy and hydroxyl groups and a is 1, 2 or 3.