Utilizing the Soret effect, we have employed a moderately focused laser beam (30 microm, 20 mW) to write spatial composition patterns into layers of the critical polymer blend poly(dimethyl siloxane)/poly(ethyl-methyl siloxane) (PDMS/PEMS, M(w)=16.4/22.8 kg/mol) both in the one- and in the two-phase region a few degrees above and below the critical temperature T(c)=37.7 degrees C. Because of th...

Abstract Structural control of siloxane-based materials at multiple length scales is important for various applications. In this study, we report the controlled assembly cage oligosiloxane building blocks by both intermolecular hydrogen bonding and hydrophobic interactions. A siloxane molecule modified with seven dimethylsilanol groups an octadecyldimethylsilyl group was synthesized stepwise si...

This paper reports a new layer-by-layer assembly approach to fabricate multilayers of cofacially aligned porphyrins on solid supports by a selective siloxane formation utilizing tetraphenylporphyrinatosilicon(IV) chloride as the building block.

Small angle neutron scattering is employed to estimate the interactions in complex multicomponent systems. The method is applied to describe a ternary system, poly(dimethyl siloxane) toluene with silica filler particles. Contrast variation by solvent deuteration is used to distinguish the three different partial structure factors of filled polymer samples, S(pp)(q), S(pf)(q), and S(ff)(q), wher...

The use of Karstedt's catalyst to study the reduction of Me2NCHO (DMF) by the popular "dual SiH"-containing tetramethyldisiloxane, HMe2SiOSiMe2H (1), has revealed that the first step in the process involves an initial single hydrosilylation to form HSiMe2OSiMe2OCH2NMe2 (3). This intermediate is readily isolated and purified via distillation. In the continued presence of the catalyst, 3 transfor...

This paper reports on the impact that corrosion of stainless steel current collectors has performance fade a symmetric, carbon/carbon electrochemical capacitor, operating with an aqueous electrolyte (1 M Na2SO4). The results obtained by applying ageing protocols (voltage–holding tests) confirm collector positive electrode undergoes tremendous degradation during 200 h in charged state. To preven...

Antimicrobial drug resistance among bacterial and fungal communities have been created a huge challenge for clinicians in treating infections. Conventional antibiotics get non-functional with time due to the rapid adaptation of microorganisms environment. Therefore, exploring alternative antimicrobial drugs/nanomaterials treat such infections is highly needed. an conventional antibiotics, funct...

Plasma co-polymers (co-p) were deposited with an atmospheric pressure plasma jet (APPJ) using a precursor mixture containing hexamethyldisiloxane (HMDSO) and limonene. A coating fragments from both precursors siloxane, carbonyl nitrogen functional groups was deposited. The flow rate of limonene found to be important parameter for co-polymerization tune the formation structure groups. FTIR XPS a...