Silicon-organic hybrid polymers and composites prepared in supercritical carbon dioxide

Materials processing in supercritical carbon dioxide: surfactants, polymers and biomaterialsElectronic supplementary information (ESI) available: video clips relating to work carried out in the Howdle research group. See http://www.rsc.org/suppdata/jm/b3/b315262f/

“…Green et al have prepared silicon containing organic/ inorganic composites by infusing SiCl 4 into poly(styrene-coallyl alcohol) (PSAA) or soluble starch (SS) using scCO 2 as the carrier medium. 120 The SiCl 4 went on to react with the alcohol groups present along the polymer backbones to form Si-O-CH 2 PSAA and Si-O-SS linkages (determined by FTIR analysis) and therefore silica-crosslinked composites. It is reported that SEM images reveal the silica to be dispersed homogeneously throughout the PSAA matrix and the size of the silica particles to be in the range 50-200 nm, although no micrographs are shown.…”

Materials processing in supercritical carbon dioxide: surfactants, polymers and biomaterialsElectronic supplementary information (ESI) available: video clips relating to work carried out in the Howdle research group. See http://www.rsc.org/suppdata/jm/b3/b315262f/

“…Green et al have prepared silicon containing organic/ inorganic composites by infusing SiCl 4 into poly(styrene-coallyl alcohol) (PSAA) or soluble starch (SS) using scCO 2 as the carrier medium. 120 The SiCl 4 went on to react with the alcohol groups present along the polymer backbones to form Si-O-CH 2 PSAA and Si-O-SS linkages (determined by FTIR analysis) and therefore silica-crosslinked composites. It is reported that SEM images reveal the silica to be dispersed homogeneously throughout the PSAA matrix and the size of the silica particles to be in the range 50-200 nm, although no micrographs are shown.…”

Polypropylene/Silica Nanocomposites Prepared by in-Situ Sol−Gel Reaction with the Aid of CO2

“…Subsequent polymerization leads to the formation of polymer composites − or modification of polymer backbone. − Recently, several papers have reported CO 2 -assisted fabrication of inorganic/polymer hybrid materials in SC CO 2 . , Lesser et al developed a synthetic route to polymer-based composites with high concentration of clay and a high degree of order . Green and co-workers cross-linked poly(styrene- co -allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium . Zeng et al prepared polymer− clay nanocomposites foams using SC CO 2 as the foaming agent …”

“…[35][36][37][38][39][40][41] Recently, several papers have reported CO 2 -assisted fabrication of inorganic/polymer hybrid materials in SC CO 2 . 42,43 Lesser et al developed a synthetic route to polymerbased composites with high concentration of clay and a high degree of order. 42 Green and co-workers crosslinked poly(styrene-co-allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium.…”

“…42 Green and co-workers crosslinked poly(styrene-co-allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium. 43 clay nanocomposites foams using SC CO 2 as the foaming agent. 44 In this article, we describe the preparation of PP/silica composites using a two-step route.…”

Materials processing in supercritical carbon dioxide: surfactants, polymers and biomaterialsElectronic supplementary information (ESI) available: video clips relating to work carried out in the Howdle research group. See http://www.rsc.org/suppdata/jm/b3/b315262f/

“…Green et al have prepared silicon containing organic/ inorganic composites by infusing SiCl 4 into poly(styrene-coallyl alcohol) (PSAA) or soluble starch (SS) using scCO 2 as the carrier medium. 120 The SiCl 4 went on to react with the alcohol groups present along the polymer backbones to form Si-O-CH 2 PSAA and Si-O-SS linkages (determined by FTIR analysis) and therefore silica-crosslinked composites. It is reported that SEM images reveal the silica to be dispersed homogeneously throughout the PSAA matrix and the size of the silica particles to be in the range 50-200 nm, although no micrographs are shown.…”

Polypropylene/Silica Nanocomposites Prepared by in-Situ Sol−Gel Reaction with the Aid of CO2

“…Subsequent polymerization leads to the formation of polymer composites − or modification of polymer backbone. − Recently, several papers have reported CO 2 -assisted fabrication of inorganic/polymer hybrid materials in SC CO 2 . , Lesser et al developed a synthetic route to polymer-based composites with high concentration of clay and a high degree of order . Green and co-workers cross-linked poly(styrene- co -allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium . Zeng et al prepared polymer− clay nanocomposites foams using SC CO 2 as the foaming agent …”

“…[35][36][37][38][39][40][41] Recently, several papers have reported CO 2 -assisted fabrication of inorganic/polymer hybrid materials in SC CO 2 . 42,43 Lesser et al developed a synthetic route to polymerbased composites with high concentration of clay and a high degree of order. 42 Green and co-workers crosslinked poly(styrene-co-allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium.…”

“…42 Green and co-workers crosslinked poly(styrene-co-allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium. 43 clay nanocomposites foams using SC CO 2 as the foaming agent. 44 In this article, we describe the preparation of PP/silica composites using a two-step route.…”

Materials processing in supercritical carbon dioxide: surfactants, polymers and biomaterialsElectronic supplementary information (ESI) available: video clips relating to work carried out in the Howdle research group. See http://www.rsc.org/suppdata/jm/b3/b315262f/

“…Green et al have prepared silicon containing organic/ inorganic composites by infusing SiCl 4 into poly(styrene-coallyl alcohol) (PSAA) or soluble starch (SS) using scCO 2 as the carrier medium. 120 The SiCl 4 went on to react with the alcohol groups present along the polymer backbones to form Si-O-CH 2 PSAA and Si-O-SS linkages (determined by FTIR analysis) and therefore silica-crosslinked composites. It is reported that SEM images reveal the silica to be dispersed homogeneously throughout the PSAA matrix and the size of the silica particles to be in the range 50-200 nm, although no micrographs are shown.…”

Polypropylene/Silica Nanocomposites Prepared by in-Situ Sol−Gel Reaction with the Aid of CO2

“…Subsequent polymerization leads to the formation of polymer composites − or modification of polymer backbone. − Recently, several papers have reported CO 2 -assisted fabrication of inorganic/polymer hybrid materials in SC CO 2 . , Lesser et al developed a synthetic route to polymer-based composites with high concentration of clay and a high degree of order . Green and co-workers cross-linked poly(styrene- co -allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium . Zeng et al prepared polymer− clay nanocomposites foams using SC CO 2 as the foaming agent …”

“…[35][36][37][38][39][40][41] Recently, several papers have reported CO 2 -assisted fabrication of inorganic/polymer hybrid materials in SC CO 2 . 42,43 Lesser et al developed a synthetic route to polymerbased composites with high concentration of clay and a high degree of order. 42 Green and co-workers crosslinked poly(styrene-co-allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium.…”

“…42 Green and co-workers crosslinked poly(styrene-co-allyl alcohol) (PSAA) or soluble starch (SS) by infusing SiCl 4 into them using SC CO 2 as the carrier medium. 43 clay nanocomposites foams using SC CO 2 as the foaming agent. 44 In this article, we describe the preparation of PP/silica composites using a two-step route.…”