With increasing the content of ydh151 , the grafting degree increased and the grafting efficiency decreased . however , the content of dcp cannot be added too much so as to avoid the crosslinking reaction between ydh151 and hdpe 但是由于ydh151與hdpe也會(huì)發(fā)生交聯(lián),所以dcp的量不能過(guò)多, ydh151的量也在低于10 %為宜, ydh151含量太多時(shí)接枝效率大幅度一卜降。
These changes may be attributed to the competition between the grafting of ydh151 and hdpe and the self - crosslinking of hdpe , and the grafting resisted the crosslinking reaction . furthermore the addition of liquid ydh151 decreased the maximal torque 加入ydh151后, ydh151與hdpe的接枝、交聯(lián)和hdpe自身的交聯(lián)并存,接枝對(duì)交聯(lián)有抑制作用,從而使扭矩下降,熔點(diǎn)和結(jié)品度部分恢復(fù)。
The extent of grafting was analyzed by ftir and element analysis and thermal properties of hdpe - g - ydh151 were studied by dsc measurement . when adding dcp to hdpe , the melting temperature and the degree of crystallization of the matrix decreased because of the crosslinking reaction of hdpe 而且mmt的加入,降低了hdpe - g - aa的熔融溫度和結(jié)晶度,這主要是因?yàn)閯冸x后的mmt在一定范圍內(nèi)限制了pe鏈的運(yùn)動(dòng),從而降低了基體的結(jié)晶能力。
Other non - peroxidated aldehydes , such as formaldehyde , acetaldehyde , glyoxal , acrolein , pyruvaldehyde , salicylaldehyde , all did not change rheological property of these biological materials . the effects of mda on rheological parameters , crosslinking reaction and their relation with age pigment - like fluorescence were studied 戊二醛作為一種蛋白固定劑能特異地改變流體特性,而其它非脂質(zhì)過(guò)氧化醛類,如甲醛、乙醛、乙二醛、丙烯醛、丙酮醛、水楊醛等并沒(méi)有明顯改變上述溶液的流變性。
To detect whether crosslinking reaction influence the fluorescence properties of the samples , oxygen - evolving psil core complexes were treated with five crosslinking agents at different concentration , then the chlorophyll fluorescence emission , excitation , and intrinsic fluorescence spectra of these samples were measured . the results showed that both chlorophyll fluorescence and intrinsic fluorescence of oxygen - evolving psil core complexes were altered by the crosslinking reaction . the maximum chlorophyll fluorescence band at 682 nm decreased and the intrinsic fluorescence emission intensity at 308 nm and 328 nm either increased or decreased 結(jié)果表明:交聯(lián)處理對(duì)psll放氧核心復(fù)合物葉綠素?zé)晒夂蛢?nèi)源熒光都有影響,引起682urn處葉綠素?zé)晒鈴?qiáng)度的降低、 308urn或328urn處蛋白質(zhì)內(nèi)源熒光強(qiáng)度的增大或減小,并與處理時(shí)所用交聯(lián)劑的濃度、交聯(lián)劑的親疏水性和交聯(lián)臂長(zhǎng)相關(guān)。