Liquefied sugar-cane bagasse polyol preparation of polyurethane crosslinked epoxy resin

• Main Authors: Wen-Ling Shi, 施玟伶
• Other Authors: Jin-Lin Han
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/x7av65

碩士 === 國立宜蘭大學 === 化學工程與材料工程學系碩士班 === 103 === The main directions of this research can be divided into two parts: First part, explore different operating temperature, reaction time bagasse add content to liquefaction of bagasse residual rate, the impact of acid thermal degradation liquefaction of bagasse polyol, liquefied bagasse polyol change of functional groups. The second part, liquefaction bagasse into first polyol polyurethane prepolymer, then adding the epoxy resin to react to form a crosslinked epoxy resin polyurethane (PU crosslinked Epoxy), viscosity tests were carried out after thermoforming tensile test, impact resistance strength test, TGA (Thermogravimetric Analyzer, TGA), differential scanning calorimetry analyzer (Differential Scanning Colarimetry, DSC), dynamic mechanical analyzer (Dynamic Mechanical Analyzer, DMA), scanning electron microscope (Scanning Electron Microscope, SEM), hygroscopic test, the degree of swelling in acetone test Discussion obtained under different reaction conditions liquefied bagasse polyols, on the viscosity of the polymer, the mechanical properties of the cured molding, thermal properties, morphology, and other hydrophilic materials are discussed study. The feasibility of using Poly(propylene oxide)glycol (PPG1000) to liquefy sugar-cane bagasse for the production of biopolyols and polyurethane crosslinked epoxy resin was investigated in this study. Liquefaction conditions of 120 °C,3hr, 3% sulfuric acid loading, and 5,10g sugar-cane bagasse biomass loading were preferred for the production of biopolyols with reduce the biomass residue rate 49.4~53.0% and promising material properties. The obtained results revealed that, the polyurethane crosslinked epoxy resin produced under preferential conditions showed compressive strength from 55.85 to 66.86 MPa and modulus from 1308.69 to 1405.81 MPa. These results suggest that PPG1000 can be used as an solvent with 3% sulfuric acid as catalyst for the liquefaction of lignocellulosic biomass such as sugar-cane bagasse for the production of biopolyols and polyurethane crosslinked epoxy resin.