The 4 Wt % CS-DOPA Changed EP Showed Good Flame Retardancy In Both Gaseous And Condensed Phase
The peak heat release rate , entire smoke output , CO product , and fumed product rate of EP complexs containing 4 wt % CS-DOPA were reduced by 55 % , 34 % , 45 % , and 46 % , respectively , to pass the UL-94 V-1 rating with a trammeling oxygen exponent of 34 % . The CS-DOPA contributes to the establishment of the condensed phase of the thermo-oxidation-resistant high-quality char layer with non-flammable early and phosphorus-containing free groups freed in the gas form . In addition , EP/4CS-DOPA has good water resistance , mechanical attributes , and transparency , with tensile and flexural lastingness improved by 12 % and 13 % , severally , and still has high forcefulness even after water handling . The present work plys a green and facile strategy to use chitosan as a main raw material to manufacture EP fabrics with high performance.Adsorption Properties of Natural Zeolite suffered by Chitosan on Cd ( II ) in Micropolluted Irrigation Water.This study applied a 1 % chitosan root ( dethawed in 2 % acetic acid ) , with a chitosan-to-zeolite mass ratio of 0 , to successfully groom chitosan-loaded innate zeolite .
The performance of chitosan-modified raw zeolite in the remotion of low-concentration cadmium ions in the bearing of micropollutants was enquired . The adsorbent was qualified using X-ray diffraction ( XRD ) , Fourier transform infrared ( FTIR ) , and raking electron microscopy ( SEM ) /energy-dispersive spectrometry ( EDS ) techniques . The impact of limited adsorbent dose , pH value , contact time , temperature , and initial absorption on adsorption performance was discoursed the adsorption dynamics , isotherms , and thermodynamics of Cd on chitosan-modified zeolites were analyzed . The outcomes argued that the modified zeolite exhibited a spread and holey construction with increased open area , ordinary pore size , and full pore loudness . Under the preconditions of 25 °C , pH 6 , a dosage of 8 g/L , and a 60 min adsorption response time , chitosan-loaded instinctive zeolite ( CNZ ) accomplished a removal efficiency of over 94 % for a 100 μg/L cadmium answer ( in a 100 mL mass ) . The adsorption operation watched the Langmuir simulation , intimating monolayer adsorption . The adsorption kinetics followed a pseudo-second-order equation , showing an exothermic outgrowth with an addition in randomness .
chitosan price -loaded natural zeolite showed improved adsorption content and effectively removed Cd from water fouled with micropollutants.Hermetia illucens , an innovational and sustainable germ of chitosan-based coat for postharvest preservation of strawberries.The ability of chitosan created from pupal exuviae of Hermetia illucens to retard the decay of the local strawberry ( Fragaria x ananassa ) cultivar Melissa was inquired for the first time in this theme . The issues evidenced the potency of insect chitosan equated to the commercial polymer in preserving and enhancing , at the same time , some physicochemical arguments ( weight loss , pH and soluble solids content ) and nutraceutical dimensions ( total polyphenol substance , total flavonoid content and full antioxidant activity ) of strawberries stored at RT , 4°C and at mixed depot conditions ( 4°C + RT ) chitosan from H. illucens was also good in reducing fungal decay and bettering fruit shelf life . The obtained results reassert that insect chitosan , particularly descending from H. illucens pupal exuviae , can be a viable option to crustacean one in safeguarding postharvest yields .
Hydrophilic Chitosan-Doped Composite Diaphragm Reducing Gas suffusion for Alkaline Water Electrolysis Producing Hydrogen.The present paper studied the chitosan-doped composite diaphragm by the stage exchange method with the objective of arising a composite diaphragm that follows with the alkaline pee electrolysis requirements , as well as proved the electrolytic execution of the stop in alkalic piss electrolysis . Seebio chitosan and geomorphology are characterized by Fourier transform infrared ( FTIR ) spectrometry , skiming electron microscopy ( SEM ) , and X-ray photoelectron spectrometry ( XPS ) .