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pingtingji鐵蟲 (正式寫手)
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[求助]
請大神幫我把以下一段英語翻譯成中文 謝謝��！
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An appropriate amount of the CNF suspension was added to the PDLLA suspension, stirred for 1 h, and immediately vacuum filtered using Millipore Durapore PVDF membrane filters with 90 mm in diameter and 0.65 μm in pore size (Fisher Scientific, Pittsburgh, PA). The paste collected on the filter membrane was air-dried for 2−3 days. The dried sample cake was found to have a two-layered structure consisting of a self-standing PDLLA-filled CNF sheet on top of a loosely bonded layer of precipitated microparticles. The bottom layer of the microparticles would crumble into fine powder when pressed by hand and could be dissolved into ethyl acetate as a clear solution, showing no sign of CNF presence. The PDLLA-CNF sheets were removed from the cakes and were compression-molded using stainless-steel picture-frame molds (1.4 mm thick) on a Carver Laboratory Press (Carver Inc., Wabash, IN) at 105 °C and 90 psi (0.6 MPa). Three composites were prepared. Their actual weight contents were calculated to be 8, 15, and 32% by dividing the dry weight of the loaded CNF by the weight of the molded composites. The 8 and 15 wt % samples were prepared by molding six and five layers of sheets stacked together. Because a higher CNF content led to a higher amount of microparticles retained in the cellulose gel formed during the filtration and, in turn, a thicker PDLLA-CNF sheet obtained, the 32 wt % composite was molded from just one sheet. A control sample was made by filtering a PDLLA suspension and compression molding using the same procedure. |
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yuesenior
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pingtingji: 金幣+20, 翻譯EPI+1, ★★★★★最佳答案, 謝謝你！我一共只有三十多的金幣，謝謝啦！不是做高分子方向的，很多專業(yè)的東西都不太懂，所以這篇文獻看了很久也沒明白，總之謝謝你啦！ 2013-03-07 10:26:39
pingtingji: 金幣+20, 翻譯EPI+1, ★★★★★最佳答案, 謝謝你！我一共只有三十多的金幣，謝謝啦！不是做高分子方向的，很多專業(yè)的東西都不太懂，所以這篇文獻看了很久也沒明白，總之謝謝你啦！ 2013-03-07 10:26:39
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取適量CNF懸浮液加于PDLLA 懸浮液中, 攪拌一個小時，旋即采用直徑為90mm的密理博Durapore PVDF過濾膜，膜微孔尺寸為0.65微米 (Fisher Scientific, Pittsburgh, PA). 膜上收集物晾干2-3天。發(fā)現(xiàn)干的樣塊分兩層結(jié)構(gòu)，上層為一PDLLA自填充的CNF層，下層為松散結(jié)合的沉淀微粒層. 微粒層的底部用手擠壓就會碾碎成細末，而且可以溶于乙酸乙酯呈澄清溶液,看不出有 CNF的存在. 去樣塊上 PDLLA-CNF層采用不銹鋼圖片模具壓膜（厚度1.4毫米）90，使用的儀器為一臺Carver Laboratory Press (Carver Inc., Wabash, IN)，壓膜溫度為105 °C, 壓力為90 psi (0.6 MPa).制備了三個合成樣. 用干樣CNF的質(zhì)量除以壓膜合成物的質(zhì)量獲得合成物的實際質(zhì)量百分含量，分別是 8, 15, 和 32%. 質(zhì)量含量為 8%和 15 %的樣是分別通過把6個和5個上層膜合起來壓膜而成的，因為高的 CNF含量會導(dǎo)致大量微顆粒滯留在過濾過程中形成的凝膠中,反過來會導(dǎo)致了一個較厚的PDLLA-CNF膜層。含量為32 %的合成物是通過單張膜壓膜而成. 控制樣是通過過濾 PDLLA懸液而成，其壓膜程序相同。 太長了，終于完了，20個金幣，太多了吧�。�！兄弟 借此機會鄭重建議各位蟲友，小木蟲只為互助提高，不鼓勵偷懶，像這樣長的東西，蟲友要一定要試著先翻譯，建議把你試譯的東西扔上來大家給你改，這樣一股腦扔上來，====。 不利于你提高，也不利于大家?guī)湍�，希望各位版主繼續(xù)完善小木蟲相關(guān)理念，保證小木蟲可持續(xù)發(fā)展，作為木蟲一份子，我不確定我無私的熱情會保持多久。 |
2樓2013-03-06 22:58:01
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