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src="https://tyunfile.71360.com/UploadFile/huixinghb/637254079271718750/9747812.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8p2idpl" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/huixinghb/637254079271718750/9747812.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="p9lroqh" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>東莞環(huán)保降解膜標(biāo)準(zhǔn)</p><p><span>***更新：</span>2020-06-07 05:16:47</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="amtkw22" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">廣東匯興環(huán)保材料有限公司</a></p><p><span>聯(lián)系人：</span>馮新科</p><p><span>郵箱: </span>sales@ti-bopp.com</p><p><span>電話: </span>18807695431</p><p><span>傳真: </span>0769_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0769-82275077</p><p><span>地址: </span>東坑鎮(zhèn)丁屋振興一路2號(hào)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="q43hovh" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3iv88te" class="box"><p><p style="text-indent:25px">用生物可降解聚乳酸(PLA)薄膜包裝蟹味菇,放置于25℃,相對(duì)濕度(RH)80%環(huán)境儲(chǔ)藏,對(duì)照組設(shè)置以聚乙烯(PE)薄膜包裝,25℃,相對(duì)濕度(RH)80%儲(chǔ)藏和無包裝室溫儲(chǔ)藏,研究PLA薄膜對(duì)蟹味菇保鮮效果的影響.相同時(shí)間間隔內(nèi)評(píng)定蟹味菇感官,檢測(cè)失重率,可溶性固體物,游離氨基酸，東莞環(huán)保降解膜標(biāo)準(zhǔn)，東莞環(huán)保降解膜標(biāo)準(zhǔn),丙二醛(MDA),褐變度等品質(zhì)指標(biāo)以及包裝袋內(nèi)O2,CO2體積分?jǐn)?shù).結(jié)果表明,第6天PLA包裝白玉菇褐變度4.7,低于PE包裝的6.8;可溶性固體物PLA包裝是1.3%,優(yōu)于PE包裝0.7%;游離氨基酸PLA包裝是30.1 mg/100 g,高于PE包裝10.8 mg/100 g;丙二醛含量PLA包裝是5.8 nmol/g FW,低于PE包裝7.7 nmol/g FW，東莞環(huán)保降解膜標(biāo)準(zhǔn).無包裝,PE和PLA包裝分別可以保存白玉菇1,3和6 d,PLA薄膜包裝能明顯延長(zhǎng)白玉菇貨架期.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="東莞環(huán)保降解膜標(biāo)準(zhǔn)" src="https://tyunfile.71360.com/UploadFile/huixinghb/637254079271718750/9747812.jpg"></div><p> 近年來，世界各國在可食膜研究上取得了很大進(jìn)展，可食膜的應(yīng)用也越來越***，但可食膜還存在著加工性、機(jī)械性強(qiáng)度、保護(hù)功能性方面比塑料薄膜差、成本高等不足之處。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 水溶性薄膜 </p> <p> 編輯 </p> <p> <br /> </p> <p> 水溶性薄膜是指在常溫下能溶解于水的薄膜，作為一種新穎的綠色包裝材料，在歐美、日本等國被***用于各種產(chǎn)品的包裝，例如農(nóng)藥、化肥、顏料、染料、清潔劑、水處理劑、礦物添加劑、洗滌劑、混凝土添加劑、攝影用化學(xué)試劑及園藝護(hù)理的化學(xué)試劑等。水溶性薄膜由于具有降解徹底、使用安全方便等環(huán)保特性，已受到世界發(fā)達(dá)國家***重視，其中溶解性比較好的水溶性薄膜為聚氧化乙烯薄膜。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="東莞環(huán)保降解膜標(biāo)準(zhǔn)" src="https://tyunfile.71360.com/UploadFile/huixinghb/637254079272744141/2916292.jpg"></div><p style="text-indent:25px">本文對(duì)聚乳酸的合成方法及近年來聚乳酸基納米復(fù)合材料的研究進(jìn)展進(jìn)行了綜述,創(chuàng)新性地提出以L-乳酸和酸性硅溶膠(aSS)為原料的原位熔融縮聚法,制備了SiO_2含量為3.5％-19.1％的聚乳酸納米復(fù)合材料,并對(duì)聚乳酸/SiO_2納米復(fù)合材料的結(jié)構(gòu)、透光率、熱性能和結(jié)晶性進(jìn)行了較深入的研究。在L-乳酸熔融縮聚過程中,隨著聚乳酸分子量的提高,體系的極性發(fā)生明顯變化:由酸性單體的強(qiáng)極性/親水性變?yōu)榫廴樗岬娜鯓O性/親油性。本文選擇酸性硅溶膠(pH=2.5)與L-乳酸單體水溶液直接混合進(jìn)行原位分散。由于二者均為強(qiáng)酸性、強(qiáng)極性,且均為水分散液,確保了SiO_2粒子的分散穩(wěn)定,且方便地實(shí)現(xiàn)了SiO_2粒子在L-乳酸單體中的均勻分散。在縮聚過程中,一方面有機(jī)相由于聚乳酸鏈的增長(zhǎng),使極性變?nèi)?而無機(jī)相SiO_2粒子表面分布有活性高的硅羥基,可以與L-乳酸單體(LLA)和乳酸齊聚物(OLLA)的羧基發(fā)生縮合反應(yīng),使OLLA接枝到SiO_2表面,隨著接枝反應(yīng)的進(jìn)行以及g-OLLA鏈的增長(zhǎng),無機(jī)相的極性也逐漸減弱,因而無機(jī)相表面也發(fā)生與有機(jī)相同步的極性變化；另一方面,g-OLLA在SiO_2粒子表面取代擴(kuò)散雙電層形成保護(hù)層,提供了位阻效應(yīng)。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="東莞環(huán)保降解膜標(biāo)準(zhǔn)" src="https://tyunfile.71360.com/UploadFile/huixinghb/637254079272050782/1949522.jpg"></div></p><br /><p>文章來源地址: 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