Guar gum based biodegradable, antibacterial and electrically conductive hydrogels

Kaith, Balbir Singh; Sharma, Reena; Kalia, Susheel

doi:10.1016/j.ijbiomac.2015.01.046

Cited by 83 publications

(32 citation statements)

References 47 publications

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“…Raw GG troughs that did not overlap with HA peaks were detected at 2925, 1658, 1455 and 815 cm -1 . The troughs pertaining to GG are consistent with previous work [44][45][46]. These troughs were evident in the dried sample, and gradually decreased in the following thermally debound spectra.…”

Section: Microscopysupporting

confidence: 90%

Guar gum: A novel binder for ceramic extrusion

Elbadawi

Mosalagae

Reaney

et al. 2017

Ceramics International

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Ceramic honeycomb extrusion is a technique capable of attaining high strength, porous ceramics. However, challenges prevent the realisation of its potential. These include the design of an intricate honeycomb die and the formulation of an extrudable paste. The present study addresses the latter by using guar gum (GG) as a binder. GG was rationally selected because hydrogels thereof exhibit strong shear-thinning and high stiffness properties, which are required for extrusion. Rheological analyses demonstrated ceramic pastes with similar qualities were achieved, with hydroxyapatite (HA) used as the model ceramic. The shear stiffness modulus of HA pastes was determined as 8.4 MPa with a yield stress of 1.1 kPa. Moreover, this was achieved with GG as the sole additive, which further facilitates the overall fabrication process. The binder extraction notably occurred at relatively low temperatures when other high molecular weight polymers demand temperatures above 1000 °C; therefore the latter precludes the use of ceramics with low sintering onset. The process culminated in a porous HA scaffold with similar porosity to that of a commercial HA graft, but with higher compressive strength. Lastly, the study

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Section: Microscopysupporting

confidence: 90%

Guar gum: A novel binder for ceramic extrusion

Elbadawi

Mosalagae

Reaney

et al. 2017

Ceramics International

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“…While it is most commonly used as a binder or thickener, the addition of a cross-linker can produce stable hydrogels under suitable conditions 4,6,[11][12][13][14][15][16] . The resulting gel may then be dried to produce clear 'plastic' films ( Figure 1), which bio-degrade rapidly upon rehydration 6,17 . As such, guar hydrogel films offer a sustainable alternative to petroleum-derived polymers (e.g.…”

Section: Introductionmentioning

confidence: 99%

Preparation and tensile properties of guar gum hydrogel films

Jussen

Sharma

Carson

et al. 2019

Polymers and Polymer Composites

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Guar gum hydrogels may be dried to form polymer films which have the potential for use as biodegradable alternatives to polymers such as low-density polyethylene. In this study, the tensile strength and tensile modulus of guar gel films having moisture contents ranging between 15% and 18% (wet basis) were measured at a strain rate of 1 mm min−1. Mean tensile strengths of the films ranged between 25 MPa and 40 MPa (dependent on composition) which is of similar magnitude to the tensile strength data for polyethylene and cellophane that are reported in the literature. The mean tensile modulus of the films (1.5–2.5 GPa) was higher than the tensile modulus values reported for low-density polyethylene but comparable to those for cellophane (3 GPa).

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“…The blending of conventional polymers with conductive polymers has been succeeded in attaining good mechanical properties and conductivity (124). Guar gum-acrylic acid-polyaniline based biodegradable, antimicrobial and electrically conductive hydrogels were prepared by Kaith et al (125) using two-step polymerization process. Recently PHB based biodegradable semi-conductive composite embedded with in-situ polymerized acid doped PANi nanofibers have been reported (126).…”

Section: Conductive Polymersmentioning

confidence: 99%

A glimpse of biodegradable polymers and their biomedical applications

Shah

Vasava

2019

E-Polymers

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Over the past two decades, biodegradable polymers (BPs) have been widely used in biomedical applications such as drug carrier, gene delivery, tissue engineering, diagnosis, medical devices, and antibacterial/antifouling biomaterials. This can be attributed to numerous factors such as chemical, mechanical and physiochemical properties of BPs, their improved processibility, functionality and sensitivity towards stimuli. The present review intended to highlight main results of research on advances and improvements in terms of synthesis, physical properties, stimuli response, and/or applicability of biodegradable plastics (BPs) during last two decades, and its biomedical applications. Recent literature relevant to this study has been cited and their developing trends and challenges of BPs have also been discussed.

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Guar gum based biodegradable, antibacterial and electrically conductive hydrogels

Cited by 83 publications

References 47 publications

Guar gum: A novel binder for ceramic extrusion

Guar gum: A novel binder for ceramic extrusion

Preparation and tensile properties of guar gum hydrogel films

A glimpse of biodegradable polymers and their biomedical applications

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