Long term degradation of poly(ɛ-caprolactone) films in biologically related fluids

Peña, J. L.; Corrales, Teresa; Izquierdo‐Barba, Isabel; Doadrio, A.; Vallet‐Regí, María

doi:10.1016/j.polymdegradstab.2005.10.016

Cited by 146 publications

(84 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…O solo original continha 227 g/cm 3 de matéria orgânica, 39% de areia, 45% de silte e 16% de argila, com pH 5.9, sendo este favorável ao crescimento microbiano [9,12] .…”

Section: Preparação Do Solounclassified

“…Dentre eles se destaca a poli(caprolactona) (PCL), um poliéster alifático sintético com propriedades semelhantes a polímeros à base de petróleo e facilmente biodegradável. O PCL é um polímero semicristalino com um ponto de fusão (T m ) entre 59 e 64 °C, dependendo do conteúdo cristalino, e uma temperatura de transição vítrea (Tg) em torno de -60 °C [3] . Devido à sua biocompatibilidade, capacidade de formar blendas e copolímeros compatíveis com uma vasta gama de outros polímeros, tem sido utilizado para melhorar as propriedades mecânicas, processabilidade e permeabilidade dos materiais, expandindo as suas aplicações [3,4] .…”

Section: Introductionunclassified

“…O PCL é um polímero semicristalino com um ponto de fusão (T m ) entre 59 e 64 °C, dependendo do conteúdo cristalino, e uma temperatura de transição vítrea (Tg) em torno de -60 °C [3] . Devido à sua biocompatibilidade, capacidade de formar blendas e copolímeros compatíveis com uma vasta gama de outros polímeros, tem sido utilizado para melhorar as propriedades mecânicas, processabilidade e permeabilidade dos materiais, expandindo as suas aplicações [3,4] . O PCL é importante pela sua grande aplicação industrial e forma sistemas miscíveis com diversos polímeros sintéticos, inclusive com o PVC [5] .…”

Section: Introductionunclassified

See 2 more Smart Citations

Biodegradação de filmes de PP/PCL em solo e solo com chorume

2010

View full text Add to dashboard Cite

Resumo: Filmes de blenda de poli(ε-caprolactona) (PCL) e polipropileno (PP) foram obtidos por moldagem por compressão. O estudo da biodegradação de filmes de blendas de PP/PCL em solo e solo com chorume foi obtido pela evolução de CO 2 , perda de massa, ângulo de contato, microscopia eletrônica de varredura (MEV) e calorimetria exploratória diferencial (DSC). As análises de evolução de CO 2 mostraram que a biodegradação da blenda de PP/PCL em solo com chorume foi maior que a dos homopolímeros, sugerindo que os polímeros na blenda são mais suscetíveis à degradação, o que se deve à não interação entre PP e PCL. Os resultados também mostraram que os microrganismos do solo com chorume provocaram uma erosão superficial. Verificou-se que a biodegradação do PCL é inibida pelos microrganismos do chorume adicionados no solo. Palavras-chave: Polímeros sintéticos, polímeros biodegradáveis, solo, polipropileno, poli(caprolactona). Study of Biodegradation of PP/PCL Films in Soil and Soil with Leachate LandfillAbstract: Blend films of polycaprolactone (PCL) and polypropylene (PP) have been obtained by melt-pressing of both components. The biodegradation of PP/PCL blend films in soil and soil with leachate landfill has been assessed with measurements of evolution of CO 2 , weight loss, contact angle, scanning electronic microscopy (SEM) and differential scanning calorimetry (DSC). The respirometric tests showed that the PP/PCL biodegradation in the soil with leachate was higher than the homopolymers, suggesting that the polymers in the blend are more susceptible to biodegradation owing to the lack of interaction between PP and PCL. The results also showed that biodegradation due to microorganisms in the soil with leachate occurred by surface erosion. It was found that the PCL biodegradation is inhibited by the leachate microorganisms added in the soil.

show abstract

“…O solo original continha 227 g/cm 3 de matéria orgânica, 39% de areia, 45% de silte e 16% de argila, com pH 5.9, sendo este favorável ao crescimento microbiano [9,12] .…”

Section: Preparação Do Solounclassified

Section: Introductionunclassified

See 1 more Smart Citation

Biodegradação de filmes de PP/PCL em solo e solo com chorume

2010

View full text Add to dashboard Cite

show abstract

“…There are many studies about the polymer blend of PLA with ductile PCL, as mentioned above. However, biodegradation of PCL is much slower than that of PLA (8) . Among various biodegradable polymers, poly(butylene succinate) (PBSU) has similar ductility with PCL and more biodegradation properties.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation and Mechanical Properties of Poly(lactic acid)/Poly(butylene succinate) Blends

Kobayashi

Sugimoto

2008

JMMP

View full text Add to dashboard Cite

Polymer blends were fabricated with poly(lactic acid) (PLA) with better mechanical properties and poly(butylene succinate) (PBSU) with better biodegradable properties to clarify the effect of the blending ratio on the biodegradable and mechanical properties of the blends. The specimens were heat treated to improve the reduction in stiffness due to blending. Hydrolysis and soil burial tests up to 16 weeks were conducted to investigate the biodegradation properties. Young's modulus increased with increasing contents of PLA, whereas tensile strength is lowest in the PLA/PBSU (50/50) polymer blend before biodegradation because of the immiscibility of PLA and PBSU. Young's modulus kept constant up 16 weeks both in the hydrolysis and the soil burial tests. On the other hand, tensile strength decreased remarkably in the hydrolysis tests. The observation results of the specimen surface and the fracture surface indicate that the surface and bulk degradation occur in hydrolysis and soil burial tests, respectively

show abstract

“…Usually, they are biocompatible, water soluble, low crystalline, or having low melting point. [1][2][3][4][5][6] Biodegradable polyurethanes (PUs) are multifunctional materials. They usually use hydrolysis-prone soft segments, such as polycaprolactone diol (PCL), polyacrylic acid, polylatic acid, and polyglycolic acid, as soft segments.…”

mentioning

confidence: 99%

Preparation and Characterization of Biodegradable Polyurethane Composites Containing Attapulgite Nanorods

Lee

Tsou

Li³

et al. 2016

Adv Polym Technol

View full text Add to dashboard Cite

ABSTRACT:In this study, polyurethane (PU) is synthesized using 4,4,-diphenylmethane diisocyanate as the hard segments and polytetramethylene glycol and polycaprolactone diol as the soft segments. In addition, attapulgite (AT)/PU nanocomposites are prepared by adding AT into PU matrix. The structure and morphology of AT/PU nanocomposites are examined using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and energy dispersive X-ray spectroscopy (EDS). The TEM results show that AT maintains its rod-like structure in the PU matrix. The FT-IR results show that there is no significant change in the FT-IR spectrum after a small amount of AT is added into the PU matrix. The XRD results show that the main crystallization peaks of AT become more apparent with increasing AT content, and the EDS results show that the intensity of the Si peak also increases with increasing AT content. In addition, the mapping shows that AT nanorods are poorly dispersed when the AT content reaches 5 wt%. The thermal and mechanical properties of the AT/PU nanocomposite with an AT content of 2 wt% are optimal, and when the AT content surpasses 5 wt%, an aggregation phenomenon occurs, resulting in reductions in the thermal and mechanical properties of the AT/PU nanocomposite. The contact angle test and atomic force microscopy results show that the surface of the nanocomposite becomes more rough and hydrophobic with increasing AT content. The scanning electron microscopy observations of the hydrolytic degradation of the AT/PU nanocomposites show that their hydrolytic degradation was affected by the test temperature, test time, and AT content. The moisture absorption test shows that the moisture absorption of the AT/PU nanocomposite increases with increasing AT content and ambient humidity. C

show abstract

Long term degradation of poly(ɛ-caprolactone) films in biologically related fluids

Cited by 146 publications

References 49 publications

Biodegradação de filmes de PP/PCL em solo e solo com chorume

Biodegradação de filmes de PP/PCL em solo e solo com chorume

Biodegradation and Mechanical Properties of Poly(lactic acid)/Poly(butylene succinate) Blends

Preparation and Characterization of Biodegradable Polyurethane Composites Containing Attapulgite Nanorods

Contact Info

Product

Resources

About