CAJ | 학술논문

以人工林轻木为研究对象，采用酚醛树脂和壳聚糖2种不同功能类型的改性剂对试件进行改性处理，并用傅立叶变换红外光谱仪、X射线衍射仪对改性前后木材的相关性能进行表征，分析改性前后木材性能的变化。结果表明，PF树脂改性后，轻木的抗胀率和阻湿率达到30％左右，端面硬度、径面硬度和顺纹抗压强度分别提高29.7％，25.0％，50.0％；单位质量的壳聚糖对轻木力学性能的贡献是PF树脂的4～8倍。红外光谱图表明，改性剂与木材内部基团发生交联反应。X射线衍射仪测试表明，木材改性剂使木材结晶区域宽度均增加约0.2 nm，其中PF处理后轻木的相对结晶度提高4.0％，而壳聚糖处理后的轻木相对结晶度提高约12.2％。
이인공림경목위연구대상，채용분철수지화각취당2충불동공능류형적개성제대시건진행개성처리，병용부립협변환홍외광보의、X사선연사의대개성전후목재적상관성능진행표정，분석개성전후목재성능적변화。결과표명，PF수지개성후，경목적항창솔화조습솔체도30％좌우，단면경도、경면경도화순문항압강도분별제고29.7％，25.0％，50.0％；단위질량적각취당대경목역학성능적공헌시PF수지적4～8배。홍외광보도표명，개성제여목재내부기단발생교련반응。X사선연사의측시표명，목재개성제사목재결정구역관도균증가약0.2 nm，기중PF처리후경목적상대결정도제고4.0％，이각취당처리후적경목상대결정도제고약12.2％。
Modification treatment of balsa wood was conducted through 2 wood modifiers of phenol-formalde-hyde resin and chitosan,and compared the characteristics of the treated and untreated wood with X-ray diffractome-ter (XRD),and Fourier transform infrared (FTIR)spectrophotometer.Results indicated that the ASE and MEE reached around 30%,and the surface hardness and compressive strength parallel grain of the treated wood in-creased by about 29.7%,25.0% and 50.0% after PF impregnation,respectively.The chitosan had the better effect of modification than PF because the chitosan had the 4-8 times increments on physical properties of wood than PF.The FTIR and XRD spectra test showed that there was cross-linking reaction between the modifier and the internal parts of the wood.And the modifier could increase the width of crystal region about 0.2 nm,and the rela-tive crystallinity of balsa wood was increased by 4.0%after PF treatment.Moreover,chitosan had an obvious effect on the relative crystallinity of balsa wood,increasing it about 12.2%.