Controlled preparation of physical cross-linked starch-g-PVA hydrogel

Xiao, Congming; Yang, Meiling

doi:10.1016/j.carbpol.2005.10.020

Cited by 108 publications

(32 citation statements)

References 9 publications

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“…Starch-g-poly(vinyl alcohol) can be prepared via the radical graft copolymerization of starch with vinyl acetate and then the saponification of the starch-g-poly(vinyl acetate). 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].…”

Section: Chemical Derivativesmentioning

confidence: 99%

“…Starch-based hydrogels have received growing interest for biomedical applications. In our lab, physically cross-linked starch-g-PVA and starch-g-PVA/hydroxyapatite hydrogel are obtained via repeated freezing/thawing circles, and hydroxyapatite (HA) can be well dispersed in such a matrix (Figure 2) [55,87]. The water content in the fresh starch-g-PVA/HA hydrogel is comparable to that of PVA/HA hydrogel, and the dried starch-g-PVA/HA films can re-adsorb water soon and reach swelling equilibrium within 12 minutes.…”

Section: In Medical Fieldmentioning

confidence: 99%

See 1 more Smart Citation

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%

Section: In Medical Fieldmentioning

confidence: 99%

Starch-based completely biodegradable polymer materials

Lu¹,

Xiao²,

Xu³

2009

Express Polym. Lett.

645

320

View full text Add to dashboard Cite

show abstract

“…biocompatible, non-toxic and non-carcinogenic biomaterials [12][13][14][15]. Poly vinyl alcohol (PVA) is one of the widely used polymers for the preparation of hydrogels.…”

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confidence: 99%

Potential Evaluation of PVA-Based Hydrogels for Biomedical Applications

Tamahkar¹,

Özkahraman²

2015

Hittite J Sci Eng

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the formation of the macroporosity fabricated during freeze/thawing process. From the swelling tests undertaken it w as apparent that all the hydrogels exhibited unique swelling characteristics having high swelling degree at all pH values such as pH 2.1, 5.5 and 7.4 representing the pH values of stomach, blood and dermis. Thus, the hydrogels synthesized in this study present important potential for biomedical applications.

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“…1 H NMR spectra of SXA, SVAc and the hydrolysis product of SVAc were recorded on a Bruker AV400 NMR spectrometer (Bruker BioSpin, Rheinstetten, Germany) using D 2 O, DMSO-d 6 and CDCl 3 as solvent respectively. Thermogravimetric analysis (TGA) of the SM, SVAc and SVA were performed with a TA V2.4F thermoanalyzer (Thermo Fisher Scientific, Waltham, MA, USA).…”

Section: Characterizationsmentioning

confidence: 99%

“…Poly(vinyl alcohol) (PVA) is a water soluble synthetic polymer that exhibits several advantages such as biodegradability, biocompatibility and capacity of forming physically cross-linked hydrogel under mild condition [3][4]. Combination of starch and PVA has been mainly documented as the relevant blend [5] and graft copolymer [6]. It is well known that the structure and function of polymers are intimately related.…”

Section: Introductionmentioning

confidence: 99%

Tailor-made starch-based conjugates containing well-defined poly(vinyl acetate) and its derivative poly(vinyl alcohol)

Lu¹,

Xiao

Xu³

et al. 2011

Express Polym. Lett.

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Abstract. Reversible addition-fragmentation chain transfer (RAFT) polymerization was adopted to synthesize starch-based conjugates that possessed controllable architecture and properties. Starch-based xanthate agent was prepared and applied as chain transfer agent to conduct the living/controlled polymerization (LCP) of vinyl acetate, which generated tailor-made conjugates of starch and well-defined poly(vinyl acetate) (SVAc). The relevant derivatives, conjugates of starch and chain length-controlled poly(vinyl alcohol) (SVA), were obtained subsequently. Various characterizations such as Fourier transform infrared spectra (FTIR), ultraviolet-visible spectroscopy (UV), proton nuclear magnetic resonance ( 1 H NMR), gel permeation chromatography (GPC), X-ray diffraction (XRD), Thermogravimetric analysis (TGA), and dynamic mechanical thermal analysis (DMTA) were performed to examine the structure of intermediates and the starch-based conjugates. Static contact angle measurements revealed that the hydrophilic character of starch-based conjugates was tunable. Well-defined SVAc was amphiphilic and it was able to self-assemble into size controllable micelles, which was verified by contact angles, transmission electron microscopy (TEM) and dynamic light scattering (DLS) tests. SVA exhibited much higher capability to form physically cross-linked hydrogel than starch did. Both the characteristic of SVAc and SVA were chain length-dependent.

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Controlled preparation of physical cross-linked starch-g-PVA hydrogel

Cited by 108 publications

References 9 publications

Starch-based completely biodegradable polymer materials

Starch-based completely biodegradable polymer materials

Potential Evaluation of PVA-Based Hydrogels for Biomedical Applications

Tailor-made starch-based conjugates containing well-defined poly(vinyl acetate) and its derivative poly(vinyl alcohol)

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