Acceleration Effects of Residual Monomers on the Degradation of Poly(glycolic acids)

Yang, Ning; Wang, Weiyu; Zhou, Ying‐Guo; Zou, Jun; Chang, Ling-Fei; Xu, Hongyao

doi:10.1007/s10924-021-02102-9

Cited by 6 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10 Y. Ning investigated the effect of residual monomers on the degradation of synthetic PGA. 11 PL. Ramkumar selected PGA as a base resin in the production of injection-molded product, through multi-objective optimization based on the ratio analysis(MOORA) method.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Control of hydrolytic degradation of polyglycolic acid using chain extender and anti‐hydrolysis agent

Sun

Chen

Wang

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Biodegradable polyglycolic acid (PGA) shows great potential to substitute engineering petrochemical-based polymers because of its high mechanical strength, stiffness, and gas barrier. However, drawbacks such as low melt strength, poor thermal stability, and rapid degradation limited its practical applications. In this paper, PGA was modified by reactive extrusion using chain extender (CE) and anti-hydrolysis agent (AHA). The effects of the modification on the flow properties, melt viscosity and long-term hydrolysis behaviors of PGA were studied. Compared with the unmodified but one-pass processed PGA (C-PGA), the melt mass flow rate of modified PGA (M-PGA) decreased, while the complex viscosity (ω = 0.1 rad/s) dramatically increased, attributable to the realization of effective chain extension. The accelerated hydrolysis aging test indicated that the hydrolysis rate constant of C-PGA at 30 C was 0.06183 day À1 , and that of M-PGA was 0.01332 day À1 , which exhibited a 78% reduction. Correspondingly, the service life of M-PGA was significantly prolonged. This may expand the potential applications of PGA, such as packaging film, agriculture, or textiles.

show abstract

Section: Introductionmentioning

confidence: 99%

“…C.Ellingford reported that PGA was modified by blending with poly (butyleneadipate‐co‐terephthalate) (PBAT) via melt‐extrusion, and the blends can be suitably used in flexible packaging films 10 . Y. Ning investigated the effect of residual monomers on the degradation of synthetic PGA 11 . PL.…”

Section: Introductionmentioning

confidence: 99%

Control of hydrolytic degradation of polyglycolic acid using chain extender and anti‐hydrolysis agent

Sun

Chen

Wang

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Work-related exposure to DIs can occur during the production and raw material treating, as well as in further handling with the finished products, especially in the activities concerning the general coating process which is performed at high temperature. Understanding the degradation mechanism of polymeric materials that could lead to the formation of dangerous products for the environment is particularly useful in combating the global problem of pollution due to polymer-matrix composite materials 16 . The minimization of residual monomer content is a priority as residual monomers can result in increased hazards while representing decreased production efficiency and increased costs.…”

Section: Introductionmentioning

confidence: 99%

A novel treatment and derivatization for quantification of residual aromatic diisocyanates in polyamide resins

Pastore

Gabrielli

Leone

et al. 2022

Sci Rep

View full text Add to dashboard Cite

In the scientific context, the environmental and healthy impact of polymers is more related to the residual monomer content rather than their macromolecular structure, due to the monomer capability to interact with membrane cells. For this a novel method to stabilize and quantify residual monomeric isocyanates in high thermal resistance polyamide resins (PAs) has been developed. This new analytical method resulted in an improvement concerning the quantification of residual aromatic diisocyanates in viscous polymeric matrices by using a simple and cheap technique like HPLC-VWD. Diisocyanate monomers were derivatized with dibutylamine, resulting in stable urea derivatives that were simultaneously analysed and quantified. The method was applied to solvent-based polyamide resins, used as primary electrical insulation, for avoiding additional step of solvent removing before the analysis. The quantification of residual monomers answers to the provisions imposed by European Regulation N. 1907/2006 (REACH) for polymer registration, and the necessity of an early evaluation of the occupational risk associated with the use of diisocyanates, due to their toxicity and high reactivity towards moisture.

show abstract

Layer-by-layer assembly of peptides-decorated coaxial nanofibrous membranes with antibiofilm and visual pH sensing capability

Yingjie

Tang

et al. 2022

Colloids and Surfaces B: Biointerfaces

View full text Add to dashboard Cite

Acceleration Effects of Residual Monomers on the Degradation of Poly(glycolic acids)

Cited by 6 publications

References 39 publications

Control of hydrolytic degradation of polyglycolic acid using chain extender and anti‐hydrolysis agent

Control of hydrolytic degradation of polyglycolic acid using chain extender and anti‐hydrolysis agent

A novel treatment and derivatization for quantification of residual aromatic diisocyanates in polyamide resins

Layer-by-layer assembly of peptides-decorated coaxial nanofibrous membranes with antibiofilm and visual pH sensing capability

Contact Info

Product

Resources

About