Conductive cellulose composites have received much attention as emerging materials due to their unique properties, such biodegradability and flexibility. However, the achievable levels of conductivity these are generally low intrinsically nonconductive properties cellulose. In this study, nanocrystals (CNC) were applied for preparation a carbon fibers/expanded graphite (CF/EG) dispersion which was coated on paper prepare highly conductive composites. Such composite characterized based...

The film-forming ability of bagasse hemicellulose and its potential for packaging were investigated in terms mechanical water vapor barrier properties. films prepared under various concentrations, chitosan/glycerol amounts (based on the amount hemicellulose), temperatures. These subsequently evaluated by measurement their Bagasse hemicellulose-based with higher tensile strengths obtained at concentrations. Scanning electron microscope images showed that did not have pores less than one...

In the present work, bagasse hemicelluloses were crosslinked using citric acid as a nontoxic crosslinking agent to improve wet strength of hemicelluloses/SPI composite films at moderate relative humidity (RH). Fourier transform infrared and thermal analysis confirmed formation ester crosslinks between led lower degradation temperature. The tensile properties in 50 − 95% RH was improved significantly, compared uncross-linked films. Particularly, results indicated that under 0.44 degrees...

In this paper, the bagasse was wet stored by hypochlorite bleaching waste water with or without chlorine. The dissolution ability of lignin, total sugar and reducing investigated. Then effluent properties storage time prolonging were tested. results showed that some small molecular weight substances dissolved from baggase, such as lignin. And chlorine better than change trend for two system similar. With extending, degraded, COD chroma decreased, improved.

Extraction of hemicelluloses is a primary step in the conversion plant biomass to valuable biofuels and chemicals. Hemicellulose distributed fiber cell wall, compact structure wall barricades transport extraction process. In this paper we presented novel microwave-assisted process enhanced with an enzymatic pretreatment improve rate from bagasse. Experimental results showed that enzyme dosage, alkali concentration microwave irradiation time were main factors governing yield hemicellulose....

Significance Cold caustic extraction (i.e., CCE) is widely used in mill practice for hemicelluloses removal, and the parameters of which can significantly affect dissolution. Therefore, dissolution behaviors under different CCE process have been investigated. The results showed that with temperature increases, also increases. However, effect alkali content complicated, since lower (<9.0 wt %) was good swelling fibers dissolution), but higher (>9.0 would accelerate competing hydration...

Laccase pretreatment is a promising approach to degrade lignin polymer for enhanced hemicellulose extraction from bagasse. A Box-Behnken design was employed optimize microwave-assisted alkaline of with the aim maximizing yield. The effect laccase on structural characteristics bagasse studied scanning electron microscopy and Brunauer-Emmett-Teller method. results showed that content decreased by 7.9% specific surface area increased 95.9% after 160 U/g 6 h. yield 88.7% under optimum conditions...

In this paper, the hemicelluloses was extracted by alkali from aspen, then it made to be surface enhance agent cationic modification. The original and modified were characterized FT-IR GC. effect of species, content treatment time on strength paper studied. results showed that optimum for 6% at 35°C 15s. conditions, tensile crushing increased more than one time. Compared with hemicelluloses, when substitution degree higher 0.03, better quality enhance.

In this paper, the bagasse wet-stored with hypochlorite (H) bleaching waste-water which was original waste liquid from H process of bagasse, cooked alkali-oxygen and its pulping effect studied. The results showed that proper treatment time wet storage 12 days, properties were as follows: screened pulp yield 62.9%, kappa number 15.4, viscosity 802 mL/g, brightness 58.8 %ISO. strength tensile index 65.6 N•m/g, tear 5.86 mN•m2/g, burst 3.83 kPa•m2/g folding endurance 302 times. addition,...

Abstract The preparation of polyimide matrix composites with low curing temperature and high mechanical properties is great importance. In this study, a low‐cost multi‐functional nanofiller, 5‐aminobenzimidazole grafted graphene oxide (5‐ABZ@GO) has been designed. By nucleophilic attack on basic groups doping GO, the above requirements were skillfully realized. results show that when addition 5‐ABZ@GO 1%, 5‐ABZ@GO/PI nanocomposites can achieve complete imidized at 200°C. Moreover,...

In this paper, bagasse (de-pithed bagasse) and pith were treated respectively, the process of hemicelluloses extraction was optimized, some parameters which may affect yield discussed, such as alkali charge, temperature time extraction. The results showed that obviously affected by charge increasing at same liquid-to-solid ratio time, maximum reached 18.47% (base on o.d.) . To pith, it could obtain 15.37% treatment with bagasse. Therefore, both good materials for

The black liquor from NaOH-AQ pulping of bagasse was treated by conventional alcohol precipitation method to separate hemicelluloses. In the system alcohol/methanol, some parameters which may affect hemicelluloses were discussed, such as mixed alcohols charge, temperature, pH and time. obtained analyzed FT-IR. results showed that compared with separation alcohol, when V : methanol 5:5 4.5 at 45°C, consumption decreased 17% 30%. Moreover, addition flocculants PAC/A PAM in process separation,...

As a byproduct of the industrial synthesis phosphoric acid, there was large quantity phosphor gypsum (PG) accumulation, which needs enormous storage space and endangers environment. The preparation calcium sulfate whisker (CSW) from waste PG could solve amounts accumulation substitute plant-based pulp fiber, reducing pollution wastewater in paper industries. In this work, CSW, length reach 230 μm, fabricated glycerol–water solution. It be found that volume ratio 4:6 best reduce water...

Alkali-oxygen pulping has received increasing attention as an environmentally compatible process; however, the resulting pulp low yield and properties due to carbohydrate degradation. In this work, effect of regulating superoxide anion radicals (O2-•) on delignification selectivity in alkali-oxygen was investigated. The characterized by Brunauer-Emmett-Teller (BET) analysis, scanning electron microscope (SEM), X-ray diffraction (XRD). Lignin removal improved regulation O2-•...

Wet-storage is the most common way to maintain sugarcane bagasse in pulping and paper-making industry, although there are few studies focused on selectivity of delignification for treated by wet-storage. In this study, wet-storage was carried out before alkali-oxygen pulping. The influence pretreatment chemical compositions, morphology bagasse, consumption NaOH alkali impregnated meal were investigated. resulted significant improvement After pretreated with bleaching water, screened yield...

This paper studied on the influence of impregnation process original board by using Styrofan SD 332S which could improve international bending strength, then own higher wear-resistant, fold-resistant and tear-resistant. Trough single factor experiments, optimum processing conditions were: wet cardboard dryness 45%, immersion at 35 °C for 4 minutes, preliminary drying 70 under premise 300 ml, 20% latex concentration, subsequent 100°C 2h. Under process, property index shoes tensile strength...

On the premise of biomass comprehensive using concept, screw section liquid aspen APMP was treated by alcohol precipitation method to separate and analyze hemicelluloses. In traditional separation system, not only effect temperature, dosage, pH value time on hemicelluloses researched, but also methanol system alcohol-CPAM were discussed. The results showed that yield relatively ideal when AMPM 2.5 times volume at 4.0 45°C for 30 min. addition, compared with dosage decreased about 12% in similar.

Carbohydrate degradation is a serious problem in alkali-oxygen pulping due to the inherently oxidative reaction conditions. Hemicellulose and short-chain cellulose are particularly susceptible by oxidation, thus have great effect on yield, as well viscosity crystallinity of resultant pulp pulping. Removal low molecular weight substances wet storage prior may increase yield improve properties, addition savings chemicals energy. This paper investigated bagasse pretreated storage, results show...

The shoe board emphasizes the strength and bear to fold especially, so it chooses long fiber raw material. experiment confirms optimal beating condition formula through analysis of jute pulp softwood (Larch) a series experiment. material category is: jute: = 7:3; Jute: 40 oSR, softwood: 30 oSR. properties original are: breaking length: 6115 meters, index: 15.79mN·m 2 /g, endurance: 2125 times.

The Americal Old Corrugated Containers (AOCC) was treated with laccase. Fiber morphology, molecular weight and distribution of lignin were analyzed by scanning electron microscope (SEM) gel permeation chromatography (GPC). Through the model compound (ferulic acid) laccase, correlative mechanism for improvement wet-strength pulp laccase discussed. results showed that decreased adhered on fiber surface after While heating treatment, condensation degree adhesion area increased. In addition,...

In this paper, the effect of residual chlorine hypochlorite (H) on high yield pulping with H 2 O /CoSO 4 wet stored bagasse was studied. Compared control sample, pulp wetstored or Ho (without chlorine) bleaching waste water had better and optical property lost seriously, but return yellow performance control. If it no requirement brightness must be kept at condition easy to yellow, storage a good method improve yield, change save clean water.

In this paper, the effect of residual chlorine hypochlorite (H) on high yield pulping with H 2 O /CoSO 4 wet stored bagasse was studied. Compared control sample, pulp wetstored or Ho (without chlorine) bleaching waste water had better and strength, but optical property lost seriously. If it no requirement brightness, storage a good method to improve strength save clean water. addition, using without chlorine, properties more stable than that chlorine. To wetstorage water, ideal treatment time 16day.

In this paper, the process of cellulase pretreatment before alkali-oxygen pulping bagasse was studied. The effect on subsequent also researched. results showed that some small-sized components and sugars dissolved into effluent in pretreatment. UV spectroscopy there no significant lignin content effluent.It found properties were promoted when dosage 2 ECU/g pulp, under same cooking conditions, pulp kappa number decreased by 1.3 brightness increased 2.5 %ISO, while viscosity slightly....