Synthesis of colloidal polyoxazoline/silica hybrids prepared in an aqueous solution

Ogoshi, Tomoki; Chujo, Yoshiki

doi:10.1016/j.polymer.2006.02.042

Cited by 16 publications

(10 citation statements)

References 37 publications

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“…The abovementioned results can be explained by assuming a polyelectrolyte complex between PEOz and AAc because of the complexing ability of the PEOz. 15 Such complex formation process would lead to the grafting of AAc to the PEOz chains. Such complexation will separate the grafted AAc, which will minimize the possibility of the homopolymerization and self–bridging, i.e., the recombination of macro polyacrylic acid radicals.…”

Section: Resultsmentioning

confidence: 99%

Swelling and drug release profile of poly(2‐ethyl‐2‐oxazoline)‐based hydrogels prepared by gamma radiation‐induced copolymerization

Ali

Alarifi

2011

J of Applied Polymer Sci

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Poly(2-ethyl-2-oxazoline) and acrylic acid were copolymerized in different compositions using crays-induced polymerization and cross-linking to obtain a series of pH-sensitive hydrogels. The preparation parameters that may affect the copolymerization process such as the feed solution composition and irradiation dose were optimized. Swelling characteristics of the obtained polymeric hydrogels were evaluated. The results show the significant effects of the hydrogel composition, soaking time, and pH on the swelling equilibrium. The diffusion parameters obtained at pH 1 and 7 show the possibility of using the prepared hydrogels in the field of colon-specific drug delivery systems. Ibuprofen as a model drug was loaded into (poly(2-ethyl-2-oxazoline)/acrylic acid) copolymer hydrogel to investigate their drug release behavior at different pH values.

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Section: Resultsmentioning

confidence: 99%

Swelling and drug release profile of poly(2‐ethyl‐2‐oxazoline)‐based hydrogels prepared by gamma radiation‐induced copolymerization

Ali

Alarifi

2011

J of Applied Polymer Sci

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“…We are interested in PMeOXz as a polymer segment to be attached onto rGO because PMeOXz is known to be miscible with silica by sol-gel method due to the existence of hydrogen bonding between them [13]. Amino-terminated PMeOXz was prepared by the living cationic ring-opening polymerization of MeOXz according to the reported procedures [17,18] (Scheme 2).…”

Section: Synthesis Of Pmeoxz-nhmentioning

confidence: 99%

“…The synthetic pathway for rGO/SiO 2 hybrid is shown in Scheme 1. Our idea is covalent modification of rGO with poly(2-methyl-2-oxazoline) (PMeOXz bonding interaction [13], the introduced PMeOXz chains on the rGO surface can be a useful compatibilizer between rGO and silica. We will report the grafting-on reaction of PMeOXz onto GO to obtain PMeOXz-grafted GO (PMeOXz-g-GO), chemical reduction of PMeOXz-g-GO to PMeOXz-g-rGO to restore conjugated structure, and the sol-gel method of TEOS in the presence of PMeOXz-g-rGO to obtain PMeOXz-g-rGO/SiO 2 hybrid.…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyoxazoline-modified reduced graphene oxide and its incorporation into silica

et al. 2015

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Amino-terminated poly(2-methyl-2-oxazoline) (PMeOXz-NH 2 ) was synthesized using the living cationic ring-opening polymerization of 2-methyl-2-oxazoline (MeOXz). PMeOXz chains were introduced onto graphene oxide (GO) by the condensation reaction between GO and PMeOXz-NH 2 to give PMeOXz-grafted GO (PMeOXz-g-GO), which was converted to PMeOXz-grafted reduced graphene oxide (PMeOXz-g-rGO) by hydrazine reduction. Acid-catalyzed sol-gel method of tetraethoxysilane was carried out in the presence of PMeOXz-g-rGO to give a transparent PMeOXz-g-rGO/SiO 2 hybrid retaining the optical property of rGO.

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“…Various hybrid polyoxazoline coatings were already explored with colloidal polymer hybrids where the C=O bonds interacted by hydrogen bonds with Si-OH of silicate network [20][21][22]. The grafting of PMOx on silicone was another polyoxazoline coating method [23].…”

Section: Introductionmentioning

confidence: 99%

Hydrophilization by coating of silylated polyoxazoline using sol–gel process

Alexis

Charnay

Lapinte

et al. 2013

Progress in Organic Coatings

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Hybrid films prepared from TEOS and polyoxazoline cross-linkers(Si-POx-Si) were coated on different substrates in order to modify their surface properties. The film cohesion and adhesion on substrates were expected through the hydrogen bonding of the polyoxazoline crosslinked network. Low molecular-weight α,-unsaturated polyoxazolines (DA-PMOx)s were synthesized by a one step cationic ring-opening polymerization (CROP) of 2-methyl-2-oxazoline (MOx) with a good control over the molecular weight. Based on double thiol-ene coupling (d-TEC), a postfunctionalization of end chains DA-PMOx gave in good yield polyoxazoline cross-linker (SiPOx-Si). Glass and various polymer substrates (PP, PEI, POM...) were spin coated by the organic-inorganic hybrid films through sol-gel process. AFM, SEM, visible reflectance spectroscopy and contact angle experiments allowed the full characterization of targeted surfaces and demonstrated the efficiency of the polyoxazoline coating.3

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Synthesis of colloidal polyoxazoline/silica hybrids prepared in an aqueous solution

Cited by 16 publications

References 37 publications

Swelling and drug release profile of poly(2‐ethyl‐2‐oxazoline)‐based hydrogels prepared by gamma radiation‐induced copolymerization

Swelling and drug release profile of poly(2‐ethyl‐2‐oxazoline)‐based hydrogels prepared by gamma radiation‐induced copolymerization

Preparation of polyoxazoline-modified reduced graphene oxide and its incorporation into silica

Hydrophilization by coating of silylated polyoxazoline using sol–gel process

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