Preparation and biodegradation of polycaprolactone-paper composites

Akahori, Shin-ichi; Osawa, Zenjiro

doi:10.1016/0141-3910(94)90194-5

Cited by 28 publications

(21 citation statements)

References 26 publications

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“…The combination of PCL with wood derived products has been investigated previously, mainly for the development of biodegradable materials based on wood particles or components (such as wood flour and PCL blends, or grafting of caprolactone from cellulose). [23][24][25] In view of the abovementioned advantages of PCL, we regarded caprolactone as an interesting candidate for in situ polymerization of wood and we report here on the first attempt to graft solid wood with poly(caprolactone) chains. For that purpose, we prepared a fully biodegradable material obtained by the ROP of caprolactone monomer initiated by -OH groups from cell wall components.…”

Section: Introductionmentioning

confidence: 99%

Fully biodegradable modification of wood for improvement of dimensional stability and water absorption properties by poly(ε-caprolactone) grafting into the cell walls

et al. 2014

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Materials derived from renewable resources are highly desirable in view of more sustainable manufacturing. Among the available natural materials, wood is one of the key candidates, because of its excellent mechanical properties. However, wood and wood-based materials in engineering applications suffer from various restraints, such as dimensional instability upon humidity changes. Several wood modification treatments increase water repellence, but the insertion of hydrophobic polymers can result in a composite material which cannot be considered as renewable anymore. In this study, we report on the grafting of the fully biodegradable poly(ε-caprolactone) (PCL) inside the wood cell walls by Sn(Oct) 2 catalysed ring-opening polymerization (ROP). The presence of polyester chains within the wood cell wall structure is monitored by confocal Raman imaging and spectroscopy as well as scanning electron microscopy. Physical tests reveal that the modified wood is more hydrophobic due to the bulking of the cell wall structure with the polyester chains, which results in a novel fully biodegradable wood material with improved dimensional stability.

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Section: Introductionmentioning

confidence: 99%

Fully biodegradable modification of wood for improvement of dimensional stability and water absorption properties by poly(ε-caprolactone) grafting into the cell walls

et al. 2014

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“…17 It was shown that M w decreased only 15%, while M n decreased 45%. At the same time, 60% weight loss was noticed.…”

Section: Biotic Environmentmentioning

confidence: 97%

Effect of processing additives on (bio)degradability of film-blown poly(?-caprolactone)

Albertsson

Renstad

Erlandsson

et al. 1998

J. Appl. Polym. Sci.

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Poly(-caprolactone)s (PCL) with slip masterbatch, Erucamide, SiO 2 and Erucamide ϩ CaCO 3 as low-molecular-weight processing additives, were film-blown in a single screw extruder. The films and recycled PCL without additives were exposed to composting, anaerobic sewage sludge (37 and 55°C), pure fungal culture, and chemical hydrolysis at two pH (7 and 10.5) and at two temperatures (room temperature and 50°C). Recycling and addition of processing additives resulted in a slightly slower degradation rate compared with the degradation of pure PCL. The degradations in biotic environment were generally faster than in abiotic environment. Higher degradation rates are observed in more complex environments (composts and anerobic sewage sludge) due to synergism between high temperature and a richer fauna of microorganisms. In the biotic environments, faster reductions in number-average molecular weight (M n ) than in weight-average molecular weight (M w ) were observed. A decrease of M n with up to 75-80% was estimated for composted pure PCL, while similar samples in anaerobic sludge at 55°C were completely degraded in 50 days. The mechanical properties of the samples subjected to composting exhibited a more rapid enbrittlement compared to the samples subjected to abiotic hydrolysis. The observed increase in crystallinity with increasing degree of degradation is explained by crystallization made possible by chain cleavage in the amorphous phase.

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“…Poly(ethylene terephthalate), PET, is by far the most popular polyester 271,272,284,289, in common use. Its absorbance of UV from daylight is typical of aromatic polyesters.…”

Section: Polyestersmentioning

confidence: 99%

Data on Specific Polymers

Wypych¹

2013

Handbook of Material Weathering

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Preparation and biodegradation of polycaprolactone-paper composites

Cited by 28 publications

References 26 publications

Fully biodegradable modification of wood for improvement of dimensional stability and water absorption properties by poly(ε-caprolactone) grafting into the cell walls

Fully biodegradable modification of wood for improvement of dimensional stability and water absorption properties by poly(ε-caprolactone) grafting into the cell walls

Effect of processing additives on (bio)degradability of film-blown poly(?-caprolactone)

Data on Specific Polymers

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