A new biodegradable blends prepared from polylactide and hyaluronic acid

Wu, Chin‐San; Liao, Hsin‐Tzu

doi:10.1016/j.polymer.2005.08.056

Cited by 83 publications

(44 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen that all characteristic peaks of PLA at 2800-3000 cm 21 appear in four polymers. 26,27 The spectrum of PLA-g-AA [ Fig. 1(B)] also indicates a broad OÀ ÀH stretching absorbance at about 3000-3600 cm 21 , absent in the PLA spectrum [ Fig.…”

Section: Resultsmentioning

confidence: 99%

Modification of biodegradable polylactide by silica and wood flour through a sol–gel process

Wu¹,

Liao²

2008

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

The aim of this work is the production of new biodegradable nanocomposites from polylactide (PLA), tetraethoxysilane (TEOS), and wood flour (WF) by means of an in-situ sol-gel process and a melt blending method. Characterizations of SiO 2 , PLA, and hybrids were performed by FTIR, 29 Si solid-state NMR, XRD, DSC, TGA, and SEM analyses. As the results, the SiO 2 can be well dispersed into the acrylic acid grafted polylactide (PLA-g-AA) in nanoscale sizes since the TEOS is partially compatible with PLA-g-AA and allows PLA-g-AA chains intercalating into SiO 2 layers.29 Si solid-state NMR analysis showed that Si atoms coordinated around SiO 4 units were predominantly Q 3 and Q 4 . The PLA-g-AA/SiO 2 hybrid demonstrates dramatic enhancement in thermal and mechanical properties of PLA; for example, 808C and 20 MPa increases in IDT and TS with the addition of 10 wt % SiO 2 due to the formation of SiÀ ÀOÀ ÀC bond, and the nanoscale dispersion of silicate layers in the polymer matrix. On the basis of the consideration of thermal and mechanical properties, it is also found that 10 wt % of SiO 2 content is optimal for preparation of PLA-g-AA/SiO 2 nanocomposites. The biodegradable nanocomposites produced from our laboratory can provide a plateau tensile strength at break when the WF content is up to 50 wt %.

show abstract

Section: Resultsmentioning

confidence: 99%

Modification of biodegradable polylactide by silica and wood flour through a sol–gel process

Wu¹,

Liao²

2008

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…The time course profile of FT-IR spectroscopy for PLA loaded with Bacillus (Figure 9(A)) shows the characteristic peaks of PLA (at %3 300-3 700, %1 700-1 760 and %500-1 500 cm À1 ) [22,23] for all the tested samples. Additionally, an extra peak at 3 293 cm À1 was observed for the sample at 60 d (Figure 9(B)), designating a new O-H stretching absorbance due to biodegradation of PLA into smaller fragments.…”

Section: Time Course Analysis With Ft-ir Spectroscopymentioning

confidence: 99%

Characterizing Biodegradation of PLA and PLA‐g‐AA/Starch Films Using a Phosphate‐Solubilizing Bacillus Species

2008

Macromolecular Bioscience

Self Cite

View full text Add to dashboard Cite

The use of PLA and PLA-g-AA/starch as materials for the controlled release of encapsulated PSB was evaluated. The results showed that the bacterium degraded both the PLA and the PLA-g-AA/starch composite films, resulting in cell release. Severe disruption of the film structure occurred after incubation for 60-90 d. The PLA-g-AA/starch (20 wt.-%) films were more biodegradable than those made of PLA and also suffered a more pronounced decrease in molecular weight and intrinsic viscosity. Although blending of starch appeared to enhance the biodegradability of the PLA films, the pattern of degradation was quite similar for both types of films. The rate of cell release depends on the biodegradability of the film.

show abstract

“…The blending of PLLA with other biodegradable polyesters has been reported in previous research. 1,4,[8][9][10][11] It has been found that blending PCL with PLLA increases ductility and, therefore, improves the fracture toughness of PLLA. 1 blends.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the mechanical and thermal properties and morphological behavior of biodegradable poly(L‐lactide)/poly(ε‐caprolactone) and poly(L‐lactide)/poly(butylene succinate‐co‐L‐lactate) polymeric blends

Vilay

Mariatti

Ahmad

et al. 2009

J of Applied Polymer Sci

116

View full text Add to dashboard Cite

Two series of biodegradable polymer blends were prepared from combinations of poly(L-lactide) (PLLA) with poly(e-caprolactone) (PCL) and poly(butylene succinate-co-L-lactate) (PBSL) in proportions of 100/0, 90/10, 80/ 20, and 70/30 (based on the weight percentage). Their mechanical properties were investigated and related to their morphologies. The thermal properties, Fourier transform infrared spectroscopy, and melt flow index analysis of the binary blends and virgin polymers were then evaluated. The addition of PCL and PBSL to PLLA reduced the tensile strength and Young's modulus, whereas the elongation at break and melt flow index increased. The stress-strain curve showed that the blending of PLLA with ductile PCL and PBSL improved the toughness and increased the thermal stability of the blended polymers. A morphological analysis of the PLLA and the PLLA blends revealed that all the PLLA/ PCL and PLLA/PBSL blends were immiscible with the PCL and PBSL phases finely dispersed in the PLLA-rich phase.

show abstract

A new biodegradable blends prepared from polylactide and hyaluronic acid

Cited by 83 publications

References 29 publications

Modification of biodegradable polylactide by silica and wood flour through a sol–gel process

Modification of biodegradable polylactide by silica and wood flour through a sol–gel process

Characterizing Biodegradation of PLA and PLA‐g‐AA/Starch Films Using a Phosphate‐Solubilizing Bacillus Species

Characterization of the mechanical and thermal properties and morphological behavior of biodegradable poly(L‐lactide)/poly(ε‐caprolactone) and poly(L‐lactide)/poly(butylene succinate‐co‐L‐lactate) polymeric blends

Contact Info

Product

Resources

About