Chlorous Acid Oxidation of Periodate Oxidized Cornstarch<sup>2</sup>

Hofreiter, B. T.; Wolff, I. A.; Mehltretter, C. L.

doi:10.1021/ja01581a026

Cited by 54 publications

(24 citation statements)

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“…To obtain a PVA-based network with a swelling behavior displaying responsiveness to pH and ionic strength, we have further oxidized the aldehydic end groups to carboxylic groups in the presence of chlorite at acidic pH. This procedure, originally applied on starch 17 and later on used on scleroglucan, 18 has been extended by us to telechelic PVA macromers to obtain a telechelic dicarboxylic acid as described in the reaction Scheme 1.…”

Section: Resultsmentioning

confidence: 99%

Tailoring of Physical and Chemical Properties of Macro- and Microhydrogels Based on Telechelic PVA

et al. 2002

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Poly(vinyl alcohol), PVA, is amenable to several structural modifications because of the presence of the hydroxyl moiety in the backbone. The chemical versatility of this polymer can be used for the obtainment of new wall-to-wall pH-responsive PVA chemical hydrogels and for the preparation of air-filled microspheres, for example, microbubbles. Here, we report on the characterization of the physical and chemical properties of these novel networks that can be potentially used in different biomedical applications as controlled drug delivery and as ultrasonic contrast agent.

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Section: Resultsmentioning

confidence: 99%

Tailoring of Physical and Chemical Properties of Macro- and Microhydrogels Based on Telechelic PVA

et al. 2002

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“…3 Titration of the dicarboxylic acid was carried out using 0É1 N solution of NaOH in the presence of phenolphthalein. 12 The percentage sodium uptake is given by the relationship :…”

Section: Copolymer Synthesismentioning

confidence: 99%

Synthesis and Biocompatibility of Maleic Anhydride Copolymers: 1. Maleic Anhydride-Vinyl Acetate, Maleic Anhydride-Methyl Methacrylate and Maleic Anhydride-Styrene

et al. 1997

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A series of maleic anhydride (MA)–vinyl acetate (VA), MA–methyl methacrylate (MM) and MA–styrene (S) copolymers were prepared and characterized. By employing various amounts of initiator, MA–VA, MA–MM and MA–S copolymers with molecular weights ranging between 18 000 and 219 000 were obtained. The ‘in vivo’ and ‘in vitro’ tests performed on K562 cellular cultures (human chronic myeloid leukaemia) and also on Westar rats (inoculated with the Walker 256 carcinosarcome) showed that, as a function of the molecular weight, the copolymers synthesized had a 50% in vitro cytotoxicity and a mean tumour regression of a maximum of 68%. © 1997 SCI.

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“…Since carboxylation of polysaccharides modifies their physicochemical properties and biological functions, various neutral polysaccharides have been oxidized to introduce carboxylate groups (Casu et al, 1984;Hofreiter, Wolff, & Mehltretter, 1957). Crescenzi, Gamini, Paradossi, and Torri (1983) synthesized a new ionic polysaccharide ('sclerox') from scleroglucan by two successive oxidations with sodium periodate and sodium chlorite, respectively.…”

Section: Introductionmentioning

confidence: 99%

Conformation of carboxylated schizophyllan in aqueous solution

Yoshiba

Sato

Osumi

et al. 2015

Carbohydrate Polymers

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Carboxylated schizophyllan (sclerox) samples of different degrees of oxidation were molecularly characterized by size exclusion chromatography equipped with a multi-angle light scattering detector (SEC-MALS) in 0.10 M aqueous NaCl solution. The molar mass distribution obtained by SEC-MALS shows that sclerox of low degree of oxidation is dissolved mainly as the trimer, whereas the trimer and single chain coexist in solution of sclerox of high degree of oxidation. The trimer of sclerox is much more flexible than the fully ordered triple helix of the parent schizophyllan and easily dissociates into single chains upon heating.

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Chlorous Acid Oxidation of Periodate Oxidized Cornstarch²

Cited by 54 publications

References 2 publications

Tailoring of Physical and Chemical Properties of Macro- and Microhydrogels Based on Telechelic PVA

Tailoring of Physical and Chemical Properties of Macro- and Microhydrogels Based on Telechelic PVA

Synthesis and Biocompatibility of Maleic Anhydride Copolymers: 1. Maleic Anhydride-Vinyl Acetate, Maleic Anhydride-Methyl Methacrylate and Maleic Anhydride-Styrene

Conformation of carboxylated schizophyllan in aqueous solution

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Chlorous Acid Oxidation of Periodate Oxidized Cornstarch2

Cited by 54 publications

References 2 publications

Tailoring of Physical and Chemical Properties of Macro- and Microhydrogels Based on Telechelic PVA

Tailoring of Physical and Chemical Properties of Macro- and Microhydrogels Based on Telechelic PVA

Synthesis and Biocompatibility of Maleic Anhydride Copolymers: 1. Maleic Anhydride-Vinyl Acetate, Maleic Anhydride-Methyl Methacrylate and Maleic Anhydride-Styrene

Conformation of carboxylated schizophyllan in aqueous solution

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Chlorous Acid Oxidation of Periodate Oxidized Cornstarch²