欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
研究了马来酸酐（MAH）固相接枝微晶纤维素（MCC）的反应工艺,并通过红外光谱、X射线衍射对微晶纤维素及其接枝产物进行了对比表征。红外结果表明,接枝产物在1719.13cm-1处出现了酯基的伸缩振动吸收峰,可定性地说明马来酸酐与微晶纤维素发生了接枝反应。X射线衍射结果表明,接枝反应并没有改变微晶纤维素的结晶结构,仅使其结晶度下降。文中探讨了接枝反应温度、时间和MAH用量等因素对接枝取代度的影响。当马来酸酐与微晶纤维素质量比为8%,反应温度90℃,反应时间3h,可得到取代度达0.1的马来酸酐接枝微晶纤维素。
英文摘要：
The most abundant biomacromolecule,cellulose has attracted considerable attention in recent years due to its biodegradable,biocompatible and renewable characters.the grafting polymerization is one of the important modification of the cellulose.The solid phase grafting of maleic an hydride（MAH）onto microcrystalline cellulose（MCC）was studied.The structures of MCC and cellulose grafting maleic（MCC-g-MAH）were characterized by infrared spectrometer（FT-IR）and wide-angle X-ray diffraction（WAXD）.The appearance of an absorption peak at 1720 cm-1 in purified MCC-g-MAH samples was attributed to C=O stretching vibrations of the carboxyl group in MAH,which demonstrated the success of grafting.The effect of reaction factors including reaction temperature,reaction time and the dosage of MAH used on the degree of substitution（DS）was investigated and the results show that a DS of 0.10 can be achieved when the molar ratio of methylmet hacrylate to microcrystalline cellulose is 0.1∶10,reaction time and temperature is 3 hours and 90 ℃ respectively.
同期刊论文项目
同项目期刊论文
Simulation of nonisothermal flow of melt during melting process of vibration-induced polymer extrude
Modeling the continuous melt transesterification of bisphenol-A and diphenyl carbonate in a continuo
A Simple Method for Forecast of Cooling Time of High-density Polyethylene during Gas-assisted Inject
The enhanced β nucleating ability of β nucleating agent chemically loaded carbon nanotubes for isota
Rheological Behavior and Mechanical Properties of High-Density Polyethylene Blends with Different Mo
Prediction of Heat Conduction with Phase-change Effects during Cooling Stage of Injection Molding of
Effect of spherical nanoparticles on the motion of macromolecular chains and segments of isotactic p
Crystallization Behavior of Poly (vinylidene fluoride)/ Multi-walled Carbon Nanotubes Nanocomposites
Thermal Characteristics and Morphology of Polyamide 6/Isotactic Polypropylene Blends in the Presence
Effect of Repetitive processing on the mechanical properties and fracture toughness of dynamically v
Analyses of dynamic rheological behavior of polymer melt based on novel experimental equipment and p
A kinetic network model for molten low-density polyethylene in parallel superposition vibration forc
Effect of Thermal Gradient Field with Phase-Change on the Crystal Morphologies of HDPE during GAIM P
Effect of temperature gradient on the development of β phase Polypropylene in Dynamically Vulcanized
Dynamic Rheological Behavior of copolymerized LLDPEs: Effect of Molecular Weight and its Distributio
Effect of Entropy-Penalty on Selective Distribution of Aluminum Borate Whiskers in Isotactic Polypro
The dynamic apparent viscosity of polymer melts during pulsatile extrusion flow with vibration force
Effects of vibration force field on the interfacial interaction and morphology of polystyrene/poly(m
Synergetic Effect on PP/mEPDM Blends Under Vibration Force Field in Tri-Screw Dynamic Mixing Extrude
The Preparation of Polypropylene/Wollastonite Composites with Tri-screw Dynamic Compounding Extruder
Computer-aided experiment of using real-time small angle light scattering image processing technique
Effect of Dynamic Shear on the Microcellular Foaming of Polypropylene/High-Density Polyethylene Blen
Effect of Temperature on Foaming Behaviors of Homo- and Co-polymer Polypropylene/Polydimethylsiloxan
The Effect of Concentrations of Modifying Agent and Plasticizer on Cell Morphology of PVC Microcellu
Enhancing mechanical properties and magnetic performance of plastics magnet via mixing under vibrati
Numerical prediction of phase-change heat conduction of injection-molded high density polyethylene t
位置：