Silylated Pinus kesiya and Betula alnoides wood surfaces using hexamethyldisiloxane (HMDSO) plasma deposition
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摘要: 以六甲基二硅氧烷(HMDSO)为沉积单体,在等离子体环境下对思茅松Pinus kesiya和西南桦Betula alnoides木材表面进行了不同时间的硅烷化改性。采用接触角测定仪、X射线光电子能谱仪(XPS)和扫描电子显微镜(SEM)对处理前后木材表面的润湿性、元素组成及化学状态、表面形貌进行了分析和表征。结果表明:相同处理条件下西南桦的接触角均大于思茅松,且接触角随处理时间增加逐渐增大,处理9 min时达最大值,分别为(1317.2)和(138.8 1.7),处理时间延长至12 min时,接触角略有下降。处理9 min时思茅松和西南桦木材表面的硅元素质量分数分别为18.80%,17.82%,沉积聚合物薄膜主要由SiC和SiCHx(x=1,2,3)组成。沉积后在思茅松木材的细胞壁表面形成了颗粒状结构,而在西南桦木材的细胞壁表面更趋向于形成棒状的结构。图8表1参19Abstract: Pinus kesiya and Betula alnoides wood surfaces were silylated for different times using hexamethyldisiloxane (HMDSO) plasma deposition. The wettability, element composition and their chemical bonding information, and surface morphology of the wood surfaces before and after modification were measured and analyzed using contact angle measurement, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Results showed that the hydrophobicity property of B. alnoides was better than that of P. kesiya. The contact angle increased gradually with an increase in treatment time and attained a maximum value with a 9 min treatment [P. kesiya = (131 7.2) and B. alnoides = (138.8 1.7)]. With a 12 min treatment the contact angles decreased slightly. When deposition time was 9 min, the wood surface Si content for P. kesiya was 18.80% and for B. alnoides was 17.82%. Furthermore, the structure of the polymerization polymer films was mainly composed of SiC and SiCHx(x = 1,2,3). After plasma coated HMDSO was applied to wood surfaces, a grain structure formed on the cell wall surface of P. kesiya; whereas a bar-like structure formed on B. alnoides. [Ch, 8 fig. 1 tab. 19 ref.]
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Key words:
- wood science and technology /
- plasma /
- Pinus kesiya wood /
- Betula alnoides wood /
- silylation
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.06.012
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