Cotton Cellulose 1, 2, 3, 4 Buthanetetracarboxylic Acid (BTCA) Crosslinking Monitored by some Physical—chemical Methods

Šauperl, Olivera; Stana‐Kleinschek, Karin; Ribitsch, Volker

doi:10.1177/0040517508096222

Cited by 47 publications

(31 citation statements)

References 19 publications

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“…Cellulose I and II are the most studied forms. In cell walls of living plants, cellulose consists of an assembly of a succession of crystallites and disordered or amorphous regions (Sauperl et al 2009). In cellulose from numerous native sources, two metastable crystal phases coexist, namely cellulose Ia and cellulose Ib (Atalla and VanderHart 1984).…”

Section: Introductionmentioning

confidence: 99%

Comparative properties of cellulose nano-crystals from native and mercerized cotton fibers

et al. 2012

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Stable aqueous suspensions of cellulose nano-crystals (CNCs) were fabricated from both native and mercerized cotton fibers by sulfuric acid hydrolysis, followed by high-pressure homogenization. Fourier transform infrared spectrometry and wide-angle X-ray diffraction data showed that the fibers had been transformed from cellulose I (native) to cellulose II (mercerized) crystal structure, and these polymorphs were retained in the nanocrystals, giving CNC-I and CNC-II. Transmission electron microscopy showed rod-like crystal morphology for both types of crystals under the given processing conditions with CNC-II having similar width but reduced length. Freeze-dried agglomerates of CNC-II had a much higher bulk density than that of CNC-I. Thermogravimetric analysis showed that CNC-II had better thermal stability. The storage moduli of CNC-II suspensions at all temperatures were substantially larger than those of CNC-I suspensions at the same concentration level. CNC-II suspensions and gels were more stable in response to temperature increases. Films of CNC and Poly(ethylene oxide) were tested. Both CNC-I/PEO and CNC-II/PEO composites showed increased tensile strength and elongation at break compared to pure PEO. However, composites with CNC-II had higher strength and elongation than composites with CNC-I.

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Section: Introductionmentioning

confidence: 99%

Comparative properties of cellulose nano-crystals from native and mercerized cotton fibers

et al. 2012

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“…During curing, carboxylic groups of BTCA can react with hydroxyl groups from both cotton and chitosan by forming stable ester bonds, possibly reacting also with free amino groups of chitosan via formation of amide (Sauperl et al 2009;El-tahlawy et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Functionalization of cotton with poly-NiPAAm/chitosan microgel. Part I. Stimuli-responsive moisture management properties

et al. 2011

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Stimuli-responsive microgel, based on synthetic polymer (poly-NiPAAm) and biopolymer (chitosan), was incorporated onto cotton fabric surface by pad-dry-cure method using 1,2,3,4-butanetetracarboxylic acid (BTCA) as crosslinker. In order to assess the moisture management properties of cotton functionalized with responsive microgel, the effects of temperature, relative humidity and concentration of microgel on water vapour transmission rate (WVTR) and moisture content (MC) were quantified. Since the use of experimental design is considered as a highly attractive feature in dealing with experiments and variables of this nature, the effects were quantified by using a central composite design. The regression equations obtained from the statistical analysis allowed the prediction of WVTR and MC at different ambient conditions. Material properties such as crease recovery and whiteness were also measured. The results indicate that both relative humidity and temperature significantly influence studied responses (WVTR and MC), showing that good perspiration can be achieved at lower humidity levels and at higher temperatures. The observed phenomena are attributed to controlled expansion (or contraction) of the surface incorporated microgel, which acts as a sensor of temperature and as a valve to regulate the water vapour permeability of functionalized cotton.

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“…Equation (9) According to the mechanism of crosslinking (Scheme 1), the quantity of accessible BTCA carboxyl groups indicates the efficiency of the cellulose crosslinking. [45,46] Since each molecule of MB is able to form a single electrostatic bond with each unit of carboxylic acid on cellulose or BTCA, it is possible to calculate the concentration of carboxyl groups on fabric. The degree of crosslinking was studied by increasing the amount of BTCA.…”

Section: Determination Of Mb Concentrationmentioning

confidence: 99%

Surface modification of cotton fabric with dual‐responsive PNIPAAm/chitosan nano hydrogel

Bashari

Hemmatinejad

Pourjavadi

2013

Polymers for Advanced Techs

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The present study deals with preparing stimuli-responsive poly N-isopropyl acryl amide/chitosan (PNCS) nano hydrogel and looks into their effects as a surface modifying system of cotton fabric. The semi-batch surfactant-free emulsion polymerization method was proposed to reduce the size of particle and synthesis of PNCS nano particles. Fourier transform infrared, nuclear magnetic resonance, differential scanning calorimetry, scanning electron microscopy and dynamic light scattering methods confirmed the nano size of synthesized PNCS particles and sensitivity of these nano particles to the different temperature and pH, respectively. The water retention capacity (WRC) and carboxyl content of modified cotton with PNCS nano particles were assessed through the central composite design. The bounded PNCS nano particles to the surface of cotton fabrics made them responsive to these dual stimuli. The results demonstrated the dual effect of BTCA amount on WRC. Increase of the amount of BTCA itself led to the decrease of the WRC of modified cotton, but in the presence of PNCS, WRC was significantly increased.

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Cotton Cellulose 1, 2, 3, 4 Buthanetetracarboxylic Acid (BTCA) Crosslinking Monitored by some Physical—chemical Methods

Cited by 47 publications

References 19 publications

Comparative properties of cellulose nano-crystals from native and mercerized cotton fibers

Comparative properties of cellulose nano-crystals from native and mercerized cotton fibers

Functionalization of cotton with poly-NiPAAm/chitosan microgel. Part I. Stimuli-responsive moisture management properties

Surface modification of cotton fabric with dual‐responsive PNIPAAm/chitosan nano hydrogel

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