Synthesis and characterization of stereoblock poly(lactic acid)s with nonequivalent D/L sequence ratios
Macromolecules, ISSN: 0024-9297, Vol: 40, Issue: 9, Page: 3049-3055
2007
- 93Citations
- 52Captures
Metric Options: Counts1 Year3 YearSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Stereoblock poly (lactic acid)s (sb-PLA) consisting of different ratios of D- and L-sequences were synthesized by a process involving solid-state polycondensation (SSP) of polymer blends of poly(L-lactic acid) (PLLA) and poly(D-lactic acid) (PDLA) of medium molecular weight. Both PLLA and PDLA prepolymers were first prepared by direct melt-polycondensation of L- and D-lactic acids, respectively. These prepolymers were melt-blended in different ratios where their respective partial stereocomplexation could aid in the crystallization of the rich polymer. The melt-blends were then subjected to SSP at a temperature of 140-160 °C, which was lower than the melting temperature of the homochiral polymers. The resultant polymers consisted of longer block chains of the rich components and had molecular weights of higher than 100 kDa when either the PLLA or PDLA ratio in the feed was larger. © 2007 American Chemical Society.
Bibliographic Details
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know