Structure and blood compatibility of highly oriented poly(l-lactic acid) chain extended by ethylene glycol diglycidyl ether

Li, Zhengqiu; Zhao, Xiaowen; Ye, Lin; Coates, Phil; Caton‐Rose, Fin; Martyn, M. T.

doi:10.1016/j.polymer.2014.11.035

Cited by 24 publications

(19 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure (a), only a few dispersed adhered platelets were observed, and they showed a round shape with no pseudopodia; this means that there may have been no platelet activation. Then, the platelet adhering number was calculated from scanning electron microscopy images and compared with those of other blood‐contacting polymers in Figure (b) . The relatively low value of PVC‐40 revealed that the platelet adhesion was greatly suppressed on the PVC‐40 surface.…”

Section: Resultsmentioning

confidence: 99%

Biocompatible shape‐memory poly(vinyl chloride) with a tunable switching temperature via a plasticization effect

Zheng

Yin

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Biocompatible shape‐memory poly(vinyl chloride) (PVC) with a tunable switching temperature (Ts) was fabricated via the incorporation of an environmentally friendly plasticizer of 1,2‐cyclohexane dicarboxylic acid diisononyl (DINCH). It was revealed that both of the shape‐memory effect (SME) and Ts were significantly influenced by the plasticization effect. With the addition of DINCH, the shape‐fixing ratio (Rf) showed a slight reduction, whereas the shape‐recovering ratio (Rr) was greatly enhanced, and Ts was decreased from 90 to 47 °C. PVC with 40 phr plasticizer realized an excellent SME with an Rf of 97.0% and a Rr of 90.1%; this resulted from the formation of an efficient shape‐memory network via the physical crosslinking of the amorphous chains with crystals and rigid chain entanglements. In addition, the blood compatibility of the DINCH‐plasticized PVC was evaluated, and the results indicate that it was of great potential for biomedical applications. Therefore, in this study, we successfully developed a new shape‐memory polymer and provided a promising strategy for achieving SME with tunable Ts. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47992.

show abstract

Section: Resultsmentioning

confidence: 99%

Biocompatible shape‐memory poly(vinyl chloride) with a tunable switching temperature via a plasticization effect

Zheng

Yin

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Samples about 10 mg were heated under nitrogen atmosphere from room temperature to 200°C with the heating rates were 10°C/min. Then, X c can be calculated as follow:

X_{c} = ((), normalΔ H_{m} / normalΔ H_{0}) \times 100 %

where Δ H m was the melting enthalpies for the samples; Δ H 0 was the melting enthalpies for 100% crystalline PLA. The Δ H 0 of PLA was 93 J/g.…”

Section: Methodsmentioning

confidence: 99%

“…Samples about 10 mg were heated under nitrogen atmosphere from room temperature to 200 C with the heating rates were 10 C/min. Then, X c can be calculated as follow 18 :…”

Section: Measurementsmentioning

confidence: 99%

Controlled in vitro degradation behavior of highly oriented long‐chain‐branched poly(lactic acid) produced by solid‐phase die drawing

Zhao

et al. 2019

J Biomedical Materials Res

Self Cite

View full text Add to dashboard Cite

Highly oriented long‐chain‐branched poly(lactic acid) (LCB‐PLA) was fabricated through solid‐phase die drawing technology, and the in vitro degradation behavior of the oriented samples in phosphate‐buffered saline (PBS) was studied. During degradation, the weight retention and molecular weight for both PLA and LCB‐PLA increased with the increase of draw ratio. Moreover, the degradation autocatalytic effect was delayed, and the deterioration of mechanical strength was reduced by orientation, which was beneficial for controlling the degradation degree and decay rate of strength for PLA as bone fixation materials. The influence mechanism of orientation on the in vitro degradation of PLA was explored. The degradation of PLA in PBS was ascribed to the hydrolytic degradation of ester bonds on the molecular chain. By orientation, a dense microfibrillar crystalline structure formed both on the surface and inside of PLA samples, limiting the diffusion and absorption of PBS molecules into the PLA matrix effectively, inhibiting the hydrolytic degradation of ester bonds, and thus delaying the deterioration of mechanical properties of PLA. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2019.

show abstract

“…Granulated samples of about 10 mg were heated from ambient temperature to 200 o C at a constant rate of 10 K/min under nitrogen atmosphere. Xc can be calculated with the following equation [13]:…”

Section: Non-isothermal Crystallization Analysismentioning

confidence: 99%

Structure and blood compatibility of highly oriented poly(l-lactic acid) chain extended by ethylene glycol diglycidyl ether

Cited by 24 publications

References 46 publications

Biocompatible shape‐memory poly(vinyl chloride) with a tunable switching temperature via a plasticization effect

Biocompatible shape‐memory poly(vinyl chloride) with a tunable switching temperature via a plasticization effect

Controlled in vitro degradation behavior of highly oriented long‐chain‐branched poly(lactic acid) produced by solid‐phase die drawing

Structure evolution and orientation mechanism of long-chain-branched poly (lactic acid) in the process of solid die drawing

Contact Info

Product

Resources

About