Preparation And Characterization Of Bamboo Fiber-Based Liquid Film

Bamboo fiber, as an abundant raw material, has been widely used in the field of biomaterials, but the application of bamboo fiber in the preparation of bamboo fiber-based biomaterials such as packaging films and agricultural plastic films is limited because of its multi-hydroxyl and regular crystal structure. In this paper, waste of the bamboo powder was used as raw material, different pretreatment methods were used in order to change the bamboo powder physical or chemical properties, structure and get the best conditioning regimen, Preparation of carboxymethyl cellulose(CMC) based on treated bamboo power by chemical methods. Add intensifier such as polyvinyl alcohol (PVA), glycerol and other auxiliary agents, prepared by glutaraldehyde cross-linking all the biodegradable plastic film.bamboo fiber based full-biodegradable films were prepared by sol-gel method. The main conclusions were as follows:1. Microstructure of bamboo fiber and pretreatment of the preparation process optimization(1) By different pretreatment methods to Bamboo, in particular ozone and microwave together with synergies, compared to the conventional alkali pretreatment the microstructure better and the results of the pretreatment preparation of carboxymethyl cellulose Sodium characteristics is better so the determine optimal pretreatment conditions are:the side of bamboo is 80, time of O3 is 30 min, NaOH concentration is 2%, Microwave Power 800W, Microwave time 10min.(2) Under laboratory conditions, high power microwave (long time) effect and ozone to improve the bamboo fiber modification on the impact of the degree of substitution(DS) and viscosity of CMC, and the whole biological performance degradation of film, including the film's mechanical properties, color, performance degradation, water retention, as well as on the membrane of the micro-structure determination(3) Use of different ozone concentrations and microwave heating technology for pretreatment of bamboo powder, to known the reason of microwave ozone explored in the mechanism of bamboo powder. The results showed that:ozone treatment, compared with other pretreatment significantly brighten the color of bamboo powder, particle size bamboo powder is relatively larger. The ozone microwave, made of the DS and viscosity of CMC significantly increased. From FTIR can see, the carbonyl oxygen increases, CMC's map feature significantly.2. Carboxymethyl cellulose preparation process optimization and characterization (1) Under laboratory conditions to study the impact of made CMC production factors:the amount of alkali, ether-based dosage of ethanol concentration on the production of sodium CMC Properties, such as viscosity, degree of substitution. Optimum condition.(2) Microwave radiation and ozone to improve the bamboo fiber modification on the impact of the DS of CMC and viscosity, in order to better discuss the DS on the membrane performance, in-depth study of the pH method, muffle furnace method of determination of DS and its relevance, usefulness were the sensing infrared verified that although the value of the two methods varied widely, but the trend of the DS are the same, indicating that the error between the same method can be negligible.(3) Using Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), XRD analysis of the bamboo fiber by means of characterization of carboxymethyl cellulose results show that:different preparation methods and conditions of the performance of the formation of CMC very different.3. Preparation of crosslinked made of bamboo fiber CMC-based biodegradable film(1) through the microwave crosslinking of the biodegradable bamboo fiber membranes, and studied the use of various auxiliary agents on the membrane performance. The results show that:adding different additives can significantly improve the physical properties of membranes, no effect on the degradation of performance; by vacuum freeze-drying can significantly increase the film's water absorption; through natural degradable method test proves that the biodegradability of film.(2) The structures of the films were characterized by FTIR, SEM and energy spectrum analysis. Gel network was the primary factor to improve the physical properties of bamboo based full-biodegradable films.the results show that:through the preparation process of crosslinking and different crosslinkers, different auxiliary agents, on the formation of membrane network structure; film tensile strength, fracture stretching rate, water absorption, the impact of degradation are different.This research is based on the use of clean approach, the development of biodegradable film of biomass, agricultural waste resources utilization and environmental protection in the agricultural industry and has opened up a practical way, to address the elimination of agricultural "white pollution ", Sand Control and Prevention provide some of the experiments such as the theoretical basis. Therefore, this study of practical relevance is useful and important.