| 000 | 03298nla2a2200457 4500 | ||
|---|---|---|---|
| 001 | 645387 | ||
| 005 | 20231030040651.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\10471 | ||
| 035 | _aRU\TPU\network\10467 | ||
| 090 | _a645387 | ||
| 100 | _a20151217a2015 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 105 | _ay z 100zy | ||
| 135 | _adrgn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aVacuum Effect on the Lactide Yield _fA. V. Yarkova [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References: р. 306-307 (36 tit.)] | ||
| 330 | _aThe vacuum effect on the yield and purity of lactide obtained by catalytic lactic acid oligomer depolymerization was investigated. As raw material for the lactic acid oligomer synthesis the L-lactic acid aqueous solution was used. It was shown that the highest yield of raw-lactide takes place via distillation under a vacuum. The raw-lactide in all fractions was purified by recrystallization from dry ethyl acetate. The highest yield of raw-lactide is observed at a vacuum of 10 ... 15 mbar. The distillation process of raw-lactide is complicated with chemical reactions. Control of the reaction, raw materials and products was performed using DTA, gel permeation chromatography, infrared spectroscopy and high performance liquid chromatography. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | 0 |
_0(RuTPU)RU\TPU\network\3889 _tProcedia Chemistry |
|
| 463 | 0 |
_0(RuTPU)RU\TPU\network\10324 _tVol. 15 : Chemistry and Chemical Engineering in XXI century (CCE 2015) _oXVI International Scientific Conference dedicated to Professor L.P. Kulyov, 25-29 May 2015, Tomsk, Russia _fNational Research Tomsk Polytechnic University (TPU) ; ed. E. I. Korotkova _v[P. 301-307] _d2015 |
|
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aолигомеры | |
| 610 | 1 | _aмолочная кислота | |
| 610 | 1 | _aлактиды | |
| 610 | 1 | _aполимеры | |
| 610 | 1 | _aвакуумные эффекты | |
| 701 | 1 |
_aYarkova _bA. V. _gAnna |
|
| 701 | 1 |
_aNovikov _bV. T. _cchemist _cAssociate Professor of Tomsk Polytechnic University, Candidate of chemical sciences _f1946- _gViktor Timofeevich _2stltpush _3(RuTPU)RU\TPU\pers\31286 |
|
| 701 | 1 |
_aGlotova _bV. N. _cchemist _cengineer Tomsk Polytechnic University _f1981- _gValentina Nikolaevna _2stltpush _3(RuTPU)RU\TPU\pers\33836 |
|
| 701 | 1 |
_aShkarin _bR. V. _cspecialist in the field of informatics and computer technology _ctechnician of Tomsk Polytechnic University _f1990- _gRoman Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\34611 |
|
| 701 | 1 |
_aBorovikova _bYa. S. _gYana |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут природных ресурсов (ИПР) _bКафедра технологии органических веществ и полимерных материалов (ТОВПМ) _h6832 _2stltpush _3(RuTPU)RU\TPU\col\18659 |
| 801 | 2 |
_aRU _b63413507 _c20161121 _gRCR |
|
| 856 | 4 | _uhttp://dx.doi.org/10.1016/j.proche.2015.10.048 | |
| 856 | 4 | _uhttp://earchive.tpu.ru/handle/11683/15068 | |
| 942 | _cCF | ||