Glass. Hydrolytic resistance of glass grains at 121 �C. Method of test and classification

2020 ◽  
Keyword(s):  
Hydrolytic Resistance

scholarly journals Hydrolytic resistance of K 2 O–PbO–SiO 2 glasses in aqueous and high‐humidity environments

2020 ◽  
Vol 103 (9) ◽  
pp. 5248-5258
Author(s):  
Teresa Palomar ◽  
Jadra Mosa ◽  
Mario Aparicio
Keyword(s):  
High Humidity ◽  
Hydrolytic Resistance

An Evaluation of the Glass Vial Hydrolytic Resistance Method

2018 ◽  
Vol 73 (3) ◽  
pp. 212-219
Author(s):  
Christopher Sloey ◽  
Camille Gleason ◽  
Michael Akers ◽  
Yasser Nashed-Samuel ◽  
Joseph Phillips
Keyword(s):  
Glass Vial ◽  
Resistance Method ◽  
Hydrolytic Resistance

Thermo-hydrolytic resistance of polyepoxide–glass fibres interfaces by the microbond test

2008 ◽  
Vol 68 (9) ◽  
pp. 2028-2033 ◽  
Author(s):  
P ZINCK ◽  
J GERARD
Keyword(s):  
Glass Fibres ◽  
Microbond Test ◽  
Hydrolytic Resistance

Titanate Ceramics with Pyrochlore Structure as a Matrix for Immobilization of Excess Weapons-Grade Plutonium: II. Hydrolytic Resistance

2004 ◽  
Vol 46 (4) ◽  
pp. 358-363 ◽  
Author(s):  
Yu. F. Volkov† ◽  
S. V. Tomilin ◽  
A. N. Lukinykh ◽  
A. A. Lizin ◽  
A. A. Elesin ◽  
...  
Keyword(s):  
Pyrochlore Structure ◽  
Hydrolytic Resistance ◽  
Titanate Ceramics ◽  
Weapons Grade Plutonium

EFFECT OF STEREOCOMPLEX FORMATION IN D-LACTIDE-CONTAINING PLLA ON THERMAL BEHAVIORS AND MECHANICAL PROPERTY CHANGES USING THE AGEING DEGRADATION TEST

2013 ◽  
Vol 25 (05) ◽  
pp. 1340003
Author(s):  
Tsai-Chin Shih ◽  
Che-Tong Lin ◽  
Sheng-Yang Lee ◽  
Wei-Jen Chang ◽  
Nai-Chia Teng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Mechanical Performance ◽  
Test Method ◽  
Molar Ratio ◽  
Thermal Behaviors ◽  
Binding Strength ◽  
Stereocomplex Formation ◽  
Degradation Test ◽  
Hydrolytic Resistance

Introduction: The formation of a stereocomplex between PLLA and PDLA has been studied intensively because it increases the mechanical performance and thermal/hydrolytic resistance of polylactide-based materials; however, few studies have investigated the stereocomplex formation between PLLA and the (D-lactide)-containing PLLA copolymer. To investigate the effect of the D-lactide content of PLLA on the thermal behaviors and mechanical properties, (5D/95L) polylactide [(5D/95L)PLA], which contains a molar ratio of 5% of the D-form and 95% of the L-form of the monomer, and (15D/85L) polylactide [(15D/85L)PLA], which contains a molar ratio of 15% of the D-form and 85% of the L-form of the monomer, were used in a series of specimens. For the hydrolytic degradation test, the specimens were placed in 20-mL vials, which were filled with phosphate-buffered solution; the vials were allowed to stand at 57°C for 91 days in accordance with the ASTM F1635-95 (2000) standard test method for in vitro studies. The mechanical properties, thermal properties and crystallization behaviors were investigated using DSC and MTS, respectively. Results: The initial bending strength of the (5D/95L)PLA and (15D/85L)PLA were 35.4 and 31.1 N, respectively. After 1 week, the binding strength of the (5D/95L)PLA increased by 9.8%, and the binding strength of the (15D/85L)PLA decreased by 26%. In addition, the DSC curve of the (5D/95L)PLA demonstrated a higher melting temperature in the 1st week, and this Tc was observed in the DSC curve of the (5D/95L)PLA only during this time. The DSC curve of the (15D/85L)PLA was irregular. Discussion & Conclusions: In the (5D/95L)PLA, the recrystallization that occurred during the hydrolysis process was confirmed by the Tc and the increase in the bending strength. The stereocomplex crystallites may be formed in the (15D/85L)PLA during the degradation process. Because of the increase in the D-form monomer, the stereocomplexes were generated more easily and acted as nucleation sites. The PLLA crystal near the stereocomplex crystallites exhibited an incomplete structure, which led to a faster decrease in the bending strength. The low D-lactide content in the matrix of the PLLA did not form a stereocomplex crystallite because the surface area was not large enough to act as a nucleation site. However, the higher D-lactide-containing fraction formed a large stereocomplex crystallite. The (5D/95L)PLA demonstrated better thermal/hydrolytic resistance and mechanical stability than the (15D/85L)PLA.

Analysis and study of hydrolytic resistance of sarcolysine in pharmaceutical form for injection by means of HPLC

1994 ◽  
Vol 28 (11) ◽  
pp. 860-865
Author(s):  
O. V. Yatsevich ◽  
A. P. Arzamastsev ◽  
Yu. V. Stukalov ◽  
N. I. Zimakova ◽  
É. Ya. Khaidukov
Keyword(s):  
Pharmaceutical Form ◽  
Hydrolytic Resistance ◽  
Analysis And Study
Sign in / Sign up

Export Citation Format

Share Document