CAJ | 학술논문

以加拿大针叶木为原料、采用硝硫混酸和HNO3／CH2 Cl2两种硝化剂分别制备了A、B、C、D 级硝化纤维素（ NC）样品，通过偏光显微镜分析测试了其含氮量及氮量分布（硝化均匀性）。同时采用不同的高压闪爆预处理条件，对针叶木进行预处理，比较了闪爆对高氮量 B、低氮量 D 级 NC的含氮量及氮量分布，系统研究了硝化剂体系组成及原料预处理条件对 NC 的含氮量及其分布影响规律。结果表明，在同样氮量级别，HNO3／CH2 Cl2硝化体系比 HNO3／H2 SO4／H2 O 得到的 NC 氮量分布更均匀，A、B、C 与 D级 NC的均匀性分别提高17．46％、16．98％、16．77％和25．79％；同一硝化剂体系，闪爆有利于硝化剂向软木纤维素纤维束内部扩散，能提高 NC含氮量及氮量分布均匀性，B级 NC，其均匀性提高6．06％，D 级 NC则提高7．56％。
이가나대침협목위원료、채용초류혼산화HNO3／CH2 Cl2량충초화제분별제비료A、B、C、D 급초화섬유소（ NC）양품，통과편광현미경분석측시료기함담량급담량분포（초화균균성）。동시채용불동적고압섬폭예처리조건，대침협목진행예처리，비교료섬폭대고담량 B、저담량 D 급 NC적함담량급담량분포，계통연구료초화제체계조성급원료예처리조건대 NC 적함담량급기분포영향규률。결과표명，재동양담량급별，HNO3／CH2 Cl2초화체계비 HNO3／H2 SO4／H2 O 득도적 NC 담량분포경균균，A、B、C 여 D급 NC적균균성분별제고17．46％、16．98％、16．77％화25．79％；동일초화제체계，섬폭유리우초화제향연목섬유소섬유속내부확산，능제고 NC함담량급담량분포균균성，B급 NC，기균균성제고6．06％，D 급 NC칙제고7．56％。
Nitrocellulose samples(NC)with A,B,C,and D grade were synthesized by nitrating Canadian softwood in HNO3/H2 SO4/H2 O and HNO3/CH2 Cl2 ,respectively. The nitrogen content and nitrogen content distribution( uniformity of nitration)of nitrocellulose were analyzed by a polarizing microscope. Using high-pressure steam explosion technology,soft wood was treated before processing. The effect of steam explosion treatment on the nitrogen content distribution of high nitrogen B and low nitrogen D grade NC was discussed. Results show that the nitrogen content distribution of nitration product from HNO3/CH2Cl2 is more u-niform than that of product from HNO3/H2 SO4/H2 O under the same nitrogen content condition. Uniformities of nitration indica-tors of NC of A,B,C and D grade improve by 16. 9%、17. 5%、16. 8% and 25. 7%,respectively. Steam explosion preprocess can improve nitrogen content and uniformity of product in the same nitrification system because the efficiency of nitration agents diffu-sion to cellulose fiber interior is improved by this treatment,and thus the uniformity for B grade NC can increase by 6. 06% and for D grade NC by 7. 56%.