| Summary: | 碩士 === 國立臺灣大學 === 森林環境暨資源學研究所 === 102 === This study used N-methylmorpholine-N-oxide (NMMO) solution as solvent and dimethyl sulfoxide (DMSO) as co-solvent, Ma bamboo Kraft pulp was the raw materials to produce regenerated cellulose. In order to know which parameter of material influence the regenerated cellulose product, treated with sodium hydroxide and hydrogen peroxide to obtain pulps with different physiochemical properties. The degree of polymerization (DP) affect the mechanical properties of cellulose films and fibers, the higher DP value supply better mechanical strength for films and fibers. Besides, it also exhibit better scalability in cellulose films. This study also used commercial dissolving pulp as a standard material to analyze the impact of roller speed, xylose content, and dimethyl sulfoxide (DMSO). The result indicated that high roller speed can obtain relative light but stronger fibers, High xylan would reduce the strength of cellulose films slightly. Films produced with dimethyl sulfoxide produce are relatively smooth and good to elongated, but strength declined. We also used Ma bamboo as raw materials to produce bamboo pulp and cellulose regenerated fibers. The strength and morphology of fibers were worse than commercial bamboo. To manufacture high-quality cellulose products. The procedure of pulping still needs improvement.
|
|---|
