用戶【blackfeverfew】點評問題和點評內容

【評論主題】34.下列何者最能降低錠劑與錠模之黏合力,最有助於錠劑自錠模中彈出?(A)magnesium stearate(B)Span 60(C)talc(D)Tween 80

【評論內容】

其實是這樣的,在潤滑劑中,分為三種:lubricant, anti-adherent, glidant

三者的英文敘述我稍微打上來

lubricant:to reduce the friction during compression

anti-adherent:avoid sticking to die walls and picking by punches

glidant:improve the flow of property of materials/granules

所以,如果照題目來看「...降低....黏合....」,那應該要選擇分在anti-adherent底下的talc

順帶一提,果仁大的glidant舉例中,其實talc不該被歸為此類,glidant在國考中出現過的是 膠性矽土(fumed-silicon)

不過在原文中也提到talcum serves all the three functions(潤滑、抗黏著、滑動), most of the manufactures still use only talcum for lubricant, ...