摘要
为了解棕榈藤材基本材性、提高我国棕榈藤资源高附加值加工利用水平,以我国特有的黄藤为研究对象,应用X射线衍射法测定黄藤材微纤丝角、结晶度,并就γ射线辐照处理对微纤丝角、结晶度有何影响进行了分析。结果表明:纤维微纤丝角在33.4°～38.7°范围内,平均为36.1°;藤皮处微纤丝角不比藤芯处的大。当标准剂量率为2.5×103Gy.h-1、辐射剂量分别为3,9和15kGy三个水平时,辐照处理前后对应微纤丝角分别为36.2°和35.8°,35.9°和35.4°,36.2°和35.4°,较处理前分别减小了1.10%,1.39%和2.21%。纤维素结晶度在24.8%～32.0%范围内,平均为28.6%,藤皮处结晶度均比藤芯处高。辐照处理前后对应结晶度分别为28.1%和26.0%,28.1%和26.9%,28.5%和27.1%,较处理前分别减小了7.58%,4.34%和4.70%,其中当辐射剂量为3kGy时,辐照导致结晶度差异在0.001水平上极显著。
In order to find out the properties and improve the levels of high value-added processing and utilization of Chinese rattan resources, the Daemonorops Margaritae, a Chinese unique rattan, was chosen as the research material, then the microfibril angles （MFA） crystallinity index （CrI） were measured through the X-ray diffraction method, and the effects of γ-ray irradiation upon the MFA CrI were analyzed. The results show that the MFA of the cane varied from 33.4° to 38.7° with the average value of 36.1°, and the MFA of the coretex were not larger than that of the core. The MFA were 36.2 and 35.8 degrees, 35.9 and 35.4 degrees, and 36.2 and 35.4 degrees before and after irradiation with a radiation dose rate of 2.5×10^3 Gy·h^-1 and radiation dose of 3, 9 and 15 kGy, and decreased 1.10%, 1.39% and 2.21% respectively compared with the former. The CrI was in the range of 24.8%-32.0%, and the average CrI was 28.6%. The CrI of coretex was larger than that of the core. Under the same radiation conditions, the CrI was 28.1% and 26.0%, 28.1% and 26.9%, and 28.5% and 27.1% before and after irradiation, and the latter decreased 7.58%, 4.34% and 4.70% respectively compared to the former. With the radiation dose of 3 kGy, the differences in CrI between with and without irradiation were most notable in the 0.001 level.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2010年第5期1404-1407,共4页
Spectroscopy and Spectral Analysis
基金
国家"十一五"科技支撑计划项目(2006BAD19B0401)
国际竹藤网络中心基本科研业务费专项资金项目(06/07-B07
1632008011)
中国博士后科学基金项目(20090450468)资助
关键词
黄藤
X射线衍射
微纤丝角
结晶度
辐照处理
Daemonorops margaritae
X-ray diffractometry
Microfibrilla angles
Crystallinity index
γ-ray irradiation
