The effect of lithium bromide (LiBr) on the structure and properties poly (vinyl alcohol) (PVA) fibers obtained by wet-spinning was studied. tensile modulus strength a PVA fiber were greatly enhanced irrespective post-spinning hot-stretching process. high degree molecular orientation arose from reduction in crystallinity hydrogen bonding between chains solution resulting addition LiBr, which re...

This paper deals with the key aspects of exergy analysis H2O/LiBr absorption refrigeration cycles where, instead agreement, disparity opinion exists among researchers. As a result, comparisons literature are often difficult or meaningless. Based on an in-depth review, issues highlighted were: a) identification dead state, b) calculation currents, and c) definition efficiency devices overall sys...

Two series of Cd(II) coordination polymers (CPs), {[Cd(bimm)2(H2O)2][(3,4-tdc)2][H2O]2}n (1a), [Cd(3,4-tdc)(bimb)]n (2a), [Cd(3,4-tdc)(bimpy)(H2O)]n (3a) and [Cd(2,3-Htdc)2(bimm)2]n (1b), {[Cd(2,3-tdc)(bimb)](H2O)}n (2b), [Cd(2,3-tdc)(bimpy)(H2O)]n (3b) where H2tdc = thiophenedicarboxylic acid, bimm = 1,2-bis(imidazol-1'-yl)methane, bimb = 1,2-bis(imidazol-1'-yl)butane and bimpy = 3,5-bis(imida...

The present work reports on the control of silk fibroin (SF) porous structures performance through various processing methods. study includes analysis two dissolving techniques (CaCl2/H2O/EtOH ternary and LiBr/H2O binary solutions), three regeneration methods (gelation, lyophilization gas foaming) one post-processing (EtOH). In all cases, followed steps lead to SF with porosity values above 94%...

Ten polymeric silver(I) double salts containing embedded acetylenediide: [(Ag2C2)2(AgCF3CO2)9(L1)3] (1), [(Ag2C2)2(AgCF3CO2)10(L2)3]H2O (2), [(Ag2C2)(AgCF3CO2)4(L3)(H2O)]0.75 H2O (3), [(Ag2C2)(1.5)(AgCF3CO2)7(L4)2] (4), [(Ag2C2)(AgCF3CO2)7(L5)2(H2O)] (5), [(Ag2C2) (AgC2F5CO2)7(L1)3(H2O)] (6), [(Ag2C2)(AgCF3CO2)7(L1)3(H2O)]2 H2O (7), [(Ag2C2)(AgC2F5CO2)6(L3)2] (8), [(Ag2C2)2(AgC2F5CO2)12(L4)2(H2...