Surface properties and biocompatibility of cellulose acetates

Dobos, Adina Maria; Stoica, Iuliana; Olaru, Niculae; Olaru, Liliana; Ioanid, Emil Ghiocel; Ioan, Silvia

doi:10.1002/app.36361

Cited by 16 publications

(12 citation statements)

References 20 publications

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“…Cellulose derivatives are large-scale commercial products, possessing many useful characteristics, such as hydrophilicity/ hydrophobicity, biodegradability, and antibacterial properties. 44,[50][51][52][53] In this context, the results concerning their interactions with blood components may be applied in the biomedical field, where assessment of bacterial adherence to the polymer surface is required.…”

Section: Antimicrobial Activity Assessmentsmentioning

confidence: 99%

Biocidal activity of cellulose materials for medical implants

Onofrei¹,

Dobos²,

Dunca

et al. 2015

J of Applied Polymer Sci

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Surface wettability trends, and blood component adhesion of some cellulose acetate phthalate/hydroxypropyl cellulose blend films are analyzed in view of adapting the system to biomedical applications. The results show that intermediate blend compositions of the corresponding films influence the surface tension parameters-controlled by the interactions occurring in the system. Increasing hydrophobicity and, implicitly, decreasing the polar surface tension components, are correlated with the adhesion/cohesion of blood components and plasma proteins. Thus, the work of spreading proteins on the hydrophobic blend surfaces indicated that albumin is not absorbed preferentially, while fibrinogen is characterized by a higher degree of adhesion on the surfaces, and also that selective adsorption of plasma proteins modifies blood compatibility. In addition, the obtained results and the ascertained antimicrobial activity of the studied blends contribute to the development of new applications in the biomedical field.

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Section: Antimicrobial Activity Assessmentsmentioning

confidence: 99%

Biocidal activity of cellulose materials for medical implants

Onofrei¹,

Dobos²,

Dunca

et al. 2015

J of Applied Polymer Sci

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“…Moreover, biopolymers show desired properties (i.e., low density, high toughness, reasonable specific strength, good thermal properties, flexible processing procedure, biodegradability, recyclability, etc. ), which make them suitable for extensive applications [ 4 , 5 , 6 , 7 ], such as reinforcement materials [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Lignin-Based High-Performance Fibers by Textile Spinning Techniques

Lin

Cheng

2021

Materials

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As a major component of lignocellulosic biomass, lignin is one of the largest natural resources of biopolymers and, thus, an abundant and renewable raw material for products, such as high-performance fibers for industrial applications. Direct conversion of lignin has long been investigated, but the fiber spinning process for lignin is difficult and the obtained fibers exhibit unsatisfactory mechanical performance mainly due to the amorphous chemical structure, low molecular weight of lignin, and broad molecular weight distribution. Therefore, different textile spinning techniques, modifications of lignin, and incorporation of lignin into polymers have been and are being developed to increase lignin’s spinnability and compatibility with existing materials to yield fibers with better mechanical performance. This review presents the latest advances in the textile fabrication techniques, modified lignin-based high-performance fibers, and their potential in the enhancement of the mechanical performance.

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“…Last few decades have seen an enormous interest in the use of polymer based materials for a number of applications ranging from biomedical to automotive as well as components of aircraft due to their outstanding properties such as low cost, great versatility, low density, copious availability, ease of processing, little damage during processing, tailor ability etc. [1] [16]. Different kinds of biobased materials have been used in a number of applications especially in the preparation of polymer composites [17] [18] [16].…”

Section: Introductionmentioning

confidence: 99%

“…[1] [16]. Different kinds of biobased materials have been used in a number of applications especially in the preparation of polymer composites [17] [18] [16]. In fact the engineering applications of bio based polymer composites have replaced a number of materials in the application areas where synthetic fiber-based polymer composites were in fashion [19] [20] [21].…”

Section: Introductionmentioning

confidence: 99%

“…These materials have enhanced energy recovery, lower greenhouse gas emissions, low dependence on non-renewable energy, no dependence on petrochemical resources and lower pollutant emissions [13] [28]. In spite of the immense advantages, use of soy as the reinforcement in the preparation of polymer composites have been restricted due to its poor wettability, higher water absorption, high moisture absorption tendency, and low thermal stability during processing as well as poor adhesion with the hydrophobic polymers used as matrix materials [16]. The effect of absorption of water/ moisture in the polymer composites ultimately leads to the degradation of the polymer composites [9].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of AN-g-SOY for Sustainable Polymer Composites

Thakur

Kessler

2014

ACS Sustainable Chem. Eng.

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Biobased polymers are rapidly emerging as one of the alternatives to synthetic polymers based materials due to the rising environmental awareness and augmented consumption of nondegradable polymers. In the present work, surface characteristics of biorenewable soy flour (SOY) were tailored via free radical induced graft copolymerization of acrylonitrile (AN) to develop the novel materials for multifunctional applications. A number of reaction parameters were optimized to get the maximum percentage of grafting. The synthesized acrylonitrile grafted soy (AN-g-SOY) copolymers were characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Polymer composites were also prepared using the pristine SOY/ AN-g-SOY as the reinforcement and poly (methyl methacrylate) (PMMA) as the matrix. It has been perceived from the dynamic mechanical analysis results that acrylonitrile grafted SOY exhibit significantly enhanced storage modulus compared to the pristine SOY reinforced polymer composites.

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Surface properties and biocompatibility of cellulose acetates

Cited by 16 publications

References 20 publications

Biocidal activity of cellulose materials for medical implants

Biocidal activity of cellulose materials for medical implants

Lignin-Based High-Performance Fibers by Textile Spinning Techniques

Synthesis and Characterization of AN-g-SOY for Sustainable Polymer Composites

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