為了(le)(le)進一步(bu)揭示影(ying)響(xiang)泡(pao)沫(mo)封堵(du)性(xing)(xing)(xing)能(neng)的(de)(de)根本原因，首先通過泡(pao)沫(mo)驅替實驗研(yan)究了(le)(le)溫度對泡(pao)沫(mo)封堵(du)性(xing)(xing)(xing)能(neng)的(de)(de)影(ying)響(xiang)，然(ran)后利用界面流變儀分(fen)析(xi)了(le)(le)界面參(can)數隨(sui)溫度的(de)(de)變化，在此基礎上，建(jian)立起泡(pao)沫(mo)封堵(du)性(xing)(xing)(xing)能(neng)與界面性(xing)(xing)(xing)質之間的(de)(de)聯系，考察界面性(xing)(xing)(xing)質對泡(pao)沫(mo)封堵(du)性(xing)(xing)(xing)能(neng)的(de)(de)影(ying)響(xiang)。

結(jie)果表明(ming)：當溫(wen)度(du)由20℃升高(gao)到80℃時(shi)，泡(pao)(pao)沫封(feng)堵(du)(du)能(neng)力(li)(li)先增(zeng)后(hou)減，40℃時(shi)達到最大，80℃時(shi)阻力(li)(li)因子減小(xiao)80%以上(shang)，有效倍數(shu)降(jiang)低(di)至40℃時(shi)的(de)六分(fen)之一。相同溫(wen)度(du)變(bian)化范(fan)圍(wei)內，平衡界面(mian)(mian)(mian)(mian)(mian)(mian)張(zhang)(zhang)力(li)(li)先減后(hou)增(zeng)，40℃時(shi)界面(mian)(mian)(mian)(mian)(mian)(mian)張(zhang)(zhang)力(li)(li)最小(xiao)為28.6 mN×m-1，而(er)擴張(zhang)(zhang)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)和界面(mian)(mian)(mian)(mian)(mian)(mian)彈(dan)性(xing)(xing)(xing)(xing)(xing)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)先增(zeng)后(hou)減，界面(mian)(mian)(mian)(mian)(mian)(mian)黏(nian)性(xing)(xing)(xing)(xing)(xing)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)則逐漸減小(xiao)，40℃時(shi)工(gong)作頻(pin)率(lv)0.1 Hz對應的(de)最大擴張(zhang)(zhang)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)、界面(mian)(mian)(mian)(mian)(mian)(mian)彈(dan)性(xing)(xing)(xing)(xing)(xing)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)和界面(mian)(mian)(mian)(mian)(mian)(mian)黏(nian)性(xing)(xing)(xing)(xing)(xing)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)分(fen)別為9.24、8.74、2.97 mN×m-1。界面(mian)(mian)(mian)(mian)(mian)(mian)流變(bian)性(xing)(xing)(xing)(xing)(xing)表征了泡(pao)(pao)沫液膜性(xing)(xing)(xing)(xing)(xing)質，封(feng)堵(du)(du)性(xing)(xing)(xing)(xing)(xing)能(neng)好的(de)泡(pao)(pao)沫應同時(shi)具有一定(ding)的(de)高(gao)黏(nian)度(du)和良(liang)好的(de)彈(dan)性(xing)(xing)(xing)(xing)(xing)，界面(mian)(mian)(mian)(mian)(mian)(mian)彈(dan)性(xing)(xing)(xing)(xing)(xing)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)和界面(mian)(mian)(mian)(mian)(mian)(mian)黏(nian)性(xing)(xing)(xing)(xing)(xing)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)共(gong)同影響(xiang)泡(pao)(pao)沫封(feng)堵(du)(du)性(xing)(xing)(xing)(xing)(xing)能(neng)；界面(mian)(mian)(mian)(mian)(mian)(mian)張(zhang)(zhang)力(li)(li)與泡(pao)(pao)沫封(feng)堵(du)(du)性(xing)(xing)(xing)(xing)(xing)能(neng)呈(cheng)負相關關系(xi)，界面(mian)(mian)(mian)(mian)(mian)(mian)張(zhang)(zhang)力(li)(li)越(yue)小(xiao)，越(yue)有利于泡(pao)(pao)沫再生，并對應越(yue)大界面(mian)(mian)(mian)(mian)(mian)(mian)模(mo)(mo)(mo)量(liang)(liang)(liang)(liang)，因而(er)泡(pao)(pao)沫封(feng)堵(du)(du)性(xing)(xing)(xing)(xing)(xing)能(neng)越(yue)好。

泡沫(mo)界面性質測量

當形成氣-液界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)后，表(biao)面(mian)(mian)(mian)活(huo)性(xing)劑分子(zi)在(zai)(zai)界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)上吸附并達到動態平衡，降低界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)張力(li)，有利(li)于(yu)界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)穩定。當界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)受到外力(li)擾動時，由于(yu)表(biao)面(mian)(mian)(mian)活(huo)性(xing)劑的存(cun)在(zai)(zai)，界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)張力(li)發生(sheng)(sheng)局部變化，使界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)和體(ti)相(xiang)(xiang)間(jian)發生(sheng)(sheng)表(biao)面(mian)(mian)(mian)活(huo)性(xing)劑分子(zi)遷移、交換等弛豫過程，從而產生(sheng)(sheng)了界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)彈性(xing)和黏性(xing)響應[10,11]。界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)擴(kuo)張模量(mN×m-1)定義(yi)為表(biao)面(mian)(mian)(mian)張力(li)與界(jie)(jie)(jie)(jie)面(mian)(mian)(mian)面(mian)(mian)(mian)積相(xiang)(xiang)對(dui)變化的比值：

如果界面受到的擾動(dong)為正(zheng)弦周期振蕩時，擴張模量(liang)可表示為：

界(jie)面(mian)性質測(ce)(ce)(ce)量采用(yong)法國Teclis公司(si)生產的(de)(de)(de)全(quan)自動界(jie)面(mian)流變儀，當測(ce)(ce)(ce)量范圍(wei)大(da)于5 mN×m-1時，精度可(ke)達0.001 mN×m-1。測(ce)(ce)(ce)量步驟(zou)為：(1)向(xiang)樣品池中倒入(ru)(ru)起泡劑溶(rong)液，將吸入(ru)(ru)氣(qi)體(ti)的(de)(de)(de)注射(she)器(qi)安裝固定，調整各部分位置(zhi)使形成(cheng)清晰(xi)的(de)(de)(de)測(ce)(ce)(ce)量圖像；(2)待設定溫(wen)度穩(wen)定后，開動馬(ma)達，通(tong)過注射(she)器(qi)向(xiang)溶(rong)液中鼓氣(qi)泡；(3)首(shou)先測(ce)(ce)(ce)量氣(qi)泡的(de)(de)(de)界(jie)面(mian)張(zhang)力，待界(jie)面(mian)張(zhang)力基本穩(wen)定后，添加不同(tong)頻率(lv)的(de)(de)(de)正(zheng)弦(xian)振(zhen)蕩，測(ce)(ce)(ce)量界(jie)面(mian)模量；(5)調整溫(wen)度，重復步驟(zou)(1)~(4)。