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配制 TPI/甲苯极稀溶液 (质量分数为 1 0 - 4%~ 1 0 - 2 % ) ,用喷雾法、漏斗富集法、生物展开法制备 TPI单链或寡链粒子试样 ,分别采用不同结晶温度及结晶时间。用透射电镜观察样品微观形貌 ,发现 TPI单链或寡链呈现多样的微观结晶形态 ,主要有 :尺寸为几十纳米的微晶粒子、几十至几百纳米的寡链单晶及在非晶衬底上的结晶小粒子等。实验发现 TPI寡链单晶较微晶小粒子更耐电子辐照。
The TPI / toluene very dilute solution (10 ~ 4% ~ 10 ~ 2%) was prepared. The TPI single - stranded or oligo - particle samples were prepared by spray method, funnel enrichment method and biological unfolding method. Crystallization temperature and crystallization time. Transmission electron microscopy was used to observe the microstructure of the samples. It was found that the single-stranded or oligo-chains of TPI showed a variety of micro-crystalline forms, mainly consisting of microcrystalline particles with dimensions of tens of nanometers, oligo-single crystals with tens to hundreds of nanometers, Crystalline particles on the crystal substrate and so on. It is found that the TPI oligo-single crystal is more electron-resistant than the microcrystalline small particles.