Tartaric Acid Starch Ether: A Novel Biopolymer‐Based Polyelectrolyte

Grote, Carsten; Lazik, Waldemar; Heinze, Thomas

doi:10.1002/marc.200300042

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…Starch-g-PVA behaves good properties of both components such as processability, hydrophilicity, biodegradability and gelation ability [52][53][54][55][56]. Starch can be easily transformed into an anionic polysaccharide via chemical functionalization [57]. For instance, a carboxylic derivative of starch, maleic starch half-ester acid (MSA), has been prepared via the esterification of starch with maleic anhydride in the presence of pyridine [58].…”

Section: Chemical Derivativesmentioning

confidence: 99%

Starch-based completely biodegradable polymer materials

Lu¹,

Xiao²,

Xu³

2009

Express Polym. Lett.

645

320

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Abstract. Starch is a natural polymer which possesses many unique properties and some shortcoming simultaneously. Some synthetic polymers are biodegradable and can be tailor-made easily. Therefore, by combining the individual advantages of starch and synthetic polymers, starch-based completely biodegradable polymers (SCBP) are potential for applications in biomedical and environmental fields. Therefore it received great attention and was extensively investigated. In this paper, the structure and characteristics of starch and some synthetic degradable polymers are briefly introduced. Then, the recent progress about the preparation of SCBP via physical blending and chemical modification is reviewed and discussed. At last, some examples have been presented to elucidate that SCBP are promising materials for various applications and their development is a good solution for reducing the consumption of petroleum resources and environmental problem.

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Section: Chemical Derivativesmentioning

confidence: 99%

Starch-based completely biodegradable polymer materials

Lu¹,

Xiao²,

Xu³

2009

Express Polym. Lett.

645

320

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“…An attractive feature of such derivatives is that they usually contain carboxyl groups, which may exhibit some special performances. Carboxymethylation and etherification are another major ways to introduce carboxyl groups onto starch chains [15][16][17]. In the documented esterification or caboxymethylation methods, each hydroxyl group of starch is transformed into a substituted group that only contains one carboxyl group.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of starch-g-poly(maleic anhydride-co-vinyl acetate)

Xiao

Tan²,

Xue³

2010

Express Polym. Lett.

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Abstract. Starch-g-poly(maleic anhydride-co-vinyl acetate) (SMV) was synthesized via the esterification reaction of starch with the copolymer of maleic anhydride and vinyl acetate. The carboxylic unit percentage (CUP) of SMV was tailored with reaction conditions, and it ranged from 29.8 to 46.9%. The structure and the morphology of the copolymers were characterized with Fourier Transform Infrared spectroscopy and X-ray diffraction analysis. It was found that SMV could form complex with some metal cations such as Ca 2+ , Pb 2+ and Hg 2+ or cationic polyelectrolyte chitosan, and precipitate from the solution. The weight of precipitation increases with an increase of the CUP of SMV. In addition, a physically cross-linked hydrogel of SMV/poly(vinyl alcohol) (PVA) was obtained by freeze/thaw technique. Scanning electron microscopy exhibited the hydrogel was uniform. The gel exhibited pH-responsive re-swelling. The maximum swelling-ratio values of SMV/PVA (9:1, wt/wt) gel were 3.29 and 5.34 in HCl (pH 1.0) and phosphate-buffer saline (PBS) (pH 12) respectively.

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“…Both of them are cheap, renewable, nontoxic, and biodegradable. It is well known that CS is a cationic biopolymer6 and starch is easily to be transferred into an anionic polysaccharide via chemical modification 7. The combination of hydrogen bonding, opposite charge attraction between CS cations, and negatively charged starch will provide polysaccharide‐based PEC excellent performances 8…”

Section: Introductionmentioning

confidence: 99%

“…It is well known that CS is a cationic biopolymer 6 and starch is easily to be transferred into an anionic polysaccharide via chemical modification. 7 The combination of hydrogen bonding, opposite charge attraction between CS cations, and negatively charged starch will provide polysaccharide-based PEC excellent performances. 8 The technology of ionic self-assembly (ISA), forming PEC by electrostatic interactions, has the advantages of low cost, reliability, mild preparation conditions, and the simplicity of synthesis with high purity.…”

Section: Introductionmentioning

confidence: 99%

Ionic self‐assembly and characterization of a polysaccharide‐based polyelectrolyte complex of maleic starch half‐ester acid with chitosan

Xiao

Fang

2009

J of Applied Polymer Sci

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A novel polysaccharide-based polyelectrolyte complex was formed via ionic self-assembly (ISA) of a carboxylic derivative of starch, maleic starch half-ester acid (MSA), with chitosan (CS) and precipitated from aqueous solution. Both Fourier transform infrared (FTIR) spectroscopy and elementary analysis results showed that there was CS in the complex. Thermogravimetric analysis (TGA) showed that the thermal resistance of the complex was higher than that of two components and the corresponding blend. X-ray diffraction (XRD) analysis result revealed that the complex was amorphous, whereas its components were semi-crystalline. In addition, the drug release behavior of the complex that contains 5-fluorouracil behaved pH-responsive. All the experimental results verified the complex was composed of MSA and CS, and also indicated that the driving force for the self-assembly of the complex was predominantly the electrostatic interactions between two oppositely charged polyelectrolytes, cationic CS, and the anionic MSA.

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Tartaric Acid Starch Ether: A Novel Biopolymer‐Based Polyelectrolyte

Cited by 10 publications

References 14 publications

Starch-based completely biodegradable polymer materials

Starch-based completely biodegradable polymer materials

Synthesis and properties of starch-g-poly(maleic anhydride-co-vinyl acetate)

Ionic self‐assembly and characterization of a polysaccharide‐based polyelectrolyte complex of maleic starch half‐ester acid with chitosan

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