Air plasma or UV-irradiation applied to surface modification of pectin/poly(vinyl alcohol) blends

Kowalonek, Jolanta; Kaczmarek, Halina; Dąbrowska, Aldona

doi:10.1016/j.apsusc.2010.07.005

Cited by 47 publications

(24 citation statements)

References 36 publications

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“…The deviations of log η a decrease with the increase of the temperature and with the increase of shear rate. Such behaviour suggests that PEC with PVA is poor or immiscible, which was also suggested in the previous works concerning these blends [11,12]. in the experiment carried out up and down [9].…”

Section: Flow Propertiessupporting

confidence: 56%

“…It was found that their surface properties can be modified by air plasma and UV-irradiation during a very short time. Particularly sensitive to plasma treatment was the blend at weight ratio of 1:1 but simultaneously this specimen appeared more resistant to 254 nm radiation compared to other compositions [11]. The photoaging studies performed in laboratory conditions using weatherometer showed that PEC/PVA blends are more stable compared to both polymers aged individually.…”

Section: Introductionmentioning

confidence: 96%

“…Recently, the surface properties and resistance to weathering of PEC/PVA blends have been investigated [11,12]. It was found that their surface properties can be modified by air plasma and UV-irradiation during a very short time.…”

Section: Introductionmentioning

confidence: 99%

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Rheological properties of pectin, poly(vinyl alcohol) and their blends in aqueous solutions

2012

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The new blends composed of natural polysaccharide -pectin and synthetic water soluble polymer -poly(vinyl alcohol) (PVA) are attractive materials due to their biocompatibility, non-toxicity and biodegradability. In this work the rheological properties of aqueous solutions of pectin (PEC), poly(vinyl alcohol) and their mixtures at various weight ratios (70/30, 50/50, 30/70) have been investigated. Flow measurements were carried out using a rotary viscometer with concentric cylinder at different temperatures (20-70 ºC) and shear rates (24-1234 s -1 ). The flow parameters and energy of activation have been calculated from the flow curves and Arrhenius plots, respectively. It was found that studied polymer solutions exhibited non-Newtonian behavior, moreover, the flow properties were dependent on the blend composition. The result show that practically there was no thixotropy in studied system but some interactions between PVA and pectin in water occurred.

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Section: Flow Propertiessupporting

confidence: 56%

Section: Introductionmentioning

confidence: 96%

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Rheological properties of pectin, poly(vinyl alcohol) and their blends in aqueous solutions

2012

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“…There has been recent interest in the use of LM pectin gels in controlled drug delivery, gene delivery, bone‐tissue engineering, surface modification of medical devices, and colonic drug delivery . LM pectin has been beneficially used for the healing of impaired wounds.…”

Section: Introductionmentioning

confidence: 99%

Low‐methoxyl pectin–zeolite hydrogels controlling drug release promote in vitro wound healing

Kocaaga

Kürkçüoğlu

Tatlıer

et al. 2019

J of Applied Polymer Sci

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This study presents the design of novel hydrogel films, based on low-methoxyl (LM) pectin and NaA-or ZnA-zeolite particles, to serve as wound dressing materials with controlled drug delivery properties. We studied the effects of the preparation method of hydrogels, the amounts of crosslinker, drug and zeolite, and the type of cation in zeolites on the drug release mechanisms from the hydrogels. Ionic strengths of both film and external medium dictated the drug release behavior of the films, while the other parameters also played essential roles. NaAzeolite hydrogels prepared using membrane diffusion controlled system, could reach a drug release ratio of 86% within 5 h. The drug-free hydrogels displayed no cytotoxicity while supporting cell proliferation and migration. Our cost-effective LM pectin-zeolite hydrogels promise to be effective wound dressing materials with controlled drug delivery ability, transparency, good swelling properties, ability to hold fluids, good oxygen transmission rate, and biocompatibility.Pectin is a water soluble polysaccharide mostly extracted from citrus peels. It is a byproduct or waste product of fruit juice industry; therefore, it is easily available and cheap. It is mainly composed of linear chains of galacturonic acid residues. Pectin is referred to as low-methoxyl pectin (LM-pectin) in case the degree of esterification of the carboxylic acid groups is <50%. LM pectin forms three-dimensional (3D) network gels of Ca 2+ ion-bridged dimers to induce an "egg box shell" structure, 4 which makes it an Additional Supporting Information may be found in the online version of this article.

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“…Poly (vinyl alcohol) (PVA) is considered as one of the important polymers and can be obtained in different forms such as, powder, film and fiber. PVA is non-toxic, water soluble polymer with a broad range of applications in many fields, such as biomedicine, pharmacy, biosensors, solid-state batteries and solid-state electrochromic displays [1][2][3][4]. The wide applications of PVA are due to its excellent chemical and physical properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of UV Irradiation on The Structure and Optical Properties of PVA/Cucl2

Ahmed

2018

JAP

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The morphology and optical properties of doped PVA with Copper Chloride, CuCl2 have been investigated. The morphology of doped samples has been examined using both atomic force microscope (AFM) and scanning electron microscope (SEM) to investigate the effect of CuCl2 on the structure of PVA. X-ray diffraction showed that the crystallinity of PVA is increased with increasing CuCl2 ratio. In addition, FTIR spectra showed that, some absorbance bands such as bands of OH groups have been affected due to CuCl2 ratio and UV irradiation. On the other hand, the effect of CuCl2 ratio and UV irradiation on UV spectra of all samples has been carried out in the range from 200 to 800 nm. It is observed that, PVA is characterized by two absorbance bands at 278 and 313 nm. The values of absorbance edge, Urbach energy and the direct energy gap of all samples have been calculated.

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Air plasma or UV-irradiation applied to surface modification of pectin/poly(vinyl alcohol) blends

Cited by 47 publications

References 36 publications

Rheological properties of pectin, poly(vinyl alcohol) and their blends in aqueous solutions

Rheological properties of pectin, poly(vinyl alcohol) and their blends in aqueous solutions

Low‐methoxyl pectin–zeolite hydrogels controlling drug release promote in vitro wound healing

Effect of UV Irradiation on The Structure and Optical Properties of PVA/Cucl2

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