CAJ | 학술논문

背景:前期研究表明丝素蛋白含量对丝素蛋白/纳米羟基磷灰石复合材料性能与结构有一定影响.目的:观察丝素蛋白含量对纳米羟基磷灰石晶体生长的调控作用.方法:采用物理化学方法制备出含0,10%,20%,30%,40%丝素蛋白的丝素蛋白/纳米羟基磷灰石复合物,通过热重分析仪、傅里叶红外光谱仪、透射电镜、X 射线粉末衍射仪分析丝素蛋白含量对纳米羟基磷灰石晶体生长的调控作用.结果与结论:丝素蛋白的加入对纳米羟基磷灰石晶体的成核和生长具有明显调控作用:在纳米羟基磷灰石晶粒沿 c 轴高度择优生长,长径比增大,形貌由短棒状调控为针状.丝素蛋白含量对纳米羟基磷灰石晶体的成核和生长影响微弱,但对晶粒在丝素蛋白基质的有序排布有明显的调控作用:当丝素含量为10%和20%时,纳米羟基磷灰石晶粒呈放射状有序排布;丝素含量为30%和40%时,纳米羟基磷灰石晶粒无序团聚,说明30%含量是丝素蛋白与纳米羟基磷灰石的饱和吸附临界点.
배경:전기연구표명사소단백함량대사소단백/납미간기린회석복합재료성능여결구유일정영향.목적:관찰사소단백함량대납미간기린회석정체생장적조공작용.방법:채용물이화학방법제비출함0,10%,20%,30%,40%사소단백적사소단백/납미간기린회석복합물,통과열중분석의、부리협홍외광보의、투사전경、X 사선분말연사의분석사소단백함량대납미간기린회석정체생장적조공작용.결과여결론:사소단백적가입대납미간기린회석정체적성핵화생장구유명현조공작용:재납미간기린회석정립연 c 축고도택우생장,장경비증대,형모유단봉상조공위침상.사소단백함량대납미간기린회석정체적성핵화생장영향미약,단대정립재사소단백기질적유서배포유명현적조공작용:당사소함량위10%화20%시,납미간기린회석정립정방사상유서배포;사소함량위30%화40%시,납미간기린회석정립무서단취,설명30%함량시사소단백여납미간기린회석적포화흡부림계점.
@@@@BACKGROUND: Silk fibroin (SF) content has been reported to have great influences on the properties and structure of SF/nano-hydroxyapatite (SF/n-HA) complex in previous studies. OBJECTIVE: To observe the effect of SF content on the crystal growth of n-HA. METHODS: SF/n-HA complex was prepared using the method of physical chemistry. The effect of SF content (0, 10%, 20%, 30%, 40%) on the crystal growth of n-HA was studied using thermogravimetric analysis, Fourier transform infrared spectroscopy, transmission electron microscope, and X-ray powder diffractometer. RESULTS AND CONCLUSION: The results show that SF affected the crystal nucleation and growth of n-HA obviously. SF induced n-HA crystals to preferential y grow along the c axis, the n-HA aspect ratio increased, and n-HA morphology changed from rod-like to needle-like. When SF content was 10% and 20%, n-HA crystals radical y dispersed in SF matrix orderly; when SF content was 30% and 40 %, the n-HA crystals were disordered in SF matrix. These findings indicate that 30% SF is the critical binding percent in the SF/n-HA preparation.