Zobrazeno 1 - 10
of 860
pro vyhledávání: '"Hans R. Kricheldorf"'
Publikováno v:
Journal of Polymer Science. 60:3222-3231
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2e264d92922aac7d1b5887b3838f3a1
https://doi.org/10.1002/pol.20220328
https://doi.org/10.1002/pol.20220328
Publikováno v:
Macromolecular Chemistry and Physics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5239a75564931ef0aa9463fd34828659
https://doi.org/10.1002/macp.202300070
https://doi.org/10.1002/macp.202300070
Publikováno v:
Materials Advances. 3:1007-1016
Experiments are performed to obtain the highest Tm and ΔHm values for poly(l-lactide)s. They also include comparison with literature data and of cyclic and linear species.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a272b858e3dd5b866990728b9ea5be2
https://doi.org/10.1039/d1ma00957e
https://doi.org/10.1039/d1ma00957e
Publikováno v:
Polymer Chemistry. 13:1177-1185
Strong protic acids catalyze intermolecular transesterification in reversible polyester syntheses even at low temperatures (109 °C), an important aspect not considered in the original Jacobson–Stockmayer theory of reversible polycondensations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2698ea863cf599503a2384dcde822b2
https://doi.org/10.1039/d1py01679b
https://doi.org/10.1039/d1py01679b
Publikováno v:
Polymer Chemistry. 13:1618-1647
Reaction mechanisms and synthetic methods used for the preparation of homo- and copolylactides based on tin(ii) and tin(iv) catalysts are reviewed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::475799cdad48cd2e84cc5c19be07e92b
https://doi.org/10.1039/d2py00092j
https://doi.org/10.1039/d2py00092j
Publikováno v:
Journal of Polymer Science. 60:785-793
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3295da67582a27f0b41f46b84aa64fbf
https://doi.org/10.1002/pol.20210823
https://doi.org/10.1002/pol.20210823
Publikováno v:
Journal of Polymer Science. 59:439-450
The catalytic potential of tin(II)acetate, tin(IV)acetate, dibutyltin-bis-acetate and dioctyl tin-bis-acetate was compared based on polymerizations of L-lactide conducted in bulk at 160 or 130C. With SnAc2 low-Lac/Cat ratios (15/1–50/1) were stu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e83d515bea6325ae80d22047c62ec08
https://doi.org/10.1002/pol.20200866
https://doi.org/10.1002/pol.20200866
Publikováno v:
Journal of Polymers and the Environment. 29:2504-2516
Polymerizations of l-lactide catalyzed either by neat SnCl2 or by SnCl2 + difunctional cocatalysts were conducted in bulk at 180, 160 and 140 °C with variation of the Lac/Cat ratio and time. With neat SnCl2 poly(L-lactide) having weight average mole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7bd879c7df6fe24e52bec01d2758afc
https://doi.org/10.1007/s10924-020-02042-w
https://doi.org/10.1007/s10924-020-02042-w
Publikováno v:
RSC Advances. 11:14093-14102
Alcohol-initiated ROPs of L-lactide were performed in bulk at 160 °C for 72 h with variation of the catalyst or with variation of the initiator (aliphatic alcohols). Spontaneous crystallization was only observed when cyclic Sn(II) compounds were use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::812da9fbd5507b128d444b90d588bda8
https://doi.org/10.1039/d1ra01990b
https://doi.org/10.1039/d1ra01990b
Publikováno v:
RSC Advances. 11:2872-2883
Cyclic polylactides were prepared in bulk at 170 °C, crystallized at 120 °C and then annealed at temperatures between 130 and 170 °C with variation of catalyst, catalyst concentration and annealing time. The transformation of the initially formed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f4b88cb4c55762320fb716dcd9cd8f3
https://doi.org/10.1039/d0ra10012a
https://doi.org/10.1039/d0ra10012a