Physical Morphology and Quantitative Characterization of Chemical Changes of Weathered PVC/Pine Composites

Fabiyi, James S.; McDonald, Armando G.

doi:10.1007/s10924-009-0152-9

Cited by 25 publications

(33 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The carbonyl index of both PVC and WPVC composites tended to increase with weathering time under both natural and QUV weathering conditions -except for WPVC under natural weathering, and WPVC with wood content of 100 phr under QUV weathering. The increase in the carbonyl index was probably caused by the oxidation reaction of PVC, in both PVC compound and WPVC composites [22,28]. In WPVC composites, the carbonyl content could increase and then decrease at longer weathering times, this being associated with the photodegradation of lignin, which reversibly transformed the paraquinone to hydroquinone structures [12].…”

Section: Discoloration Testingmentioning

confidence: 99%

“…This was because the difference in light spectrum was produced by solar radiation, and that the accelerated weathering of MAPP was susceptible to degradation by radiation frequencies that were more abundant in solar radiation. The work of Fabiyi and McDonald [22] also reported on the effects of three weathering regimes -xenon-arc, UVA, and natural weathering -on the photodegradation of WPVC composites; they found that the carbonyl and polyene contents of weathered WPVC composites under xenon-arc and UVA weathering increased with increasing weathering time and then decreased after 1200 h, whereas those under natural weathering progressively increased throughout the natural weathering times used. Several studies have indicated that the degradation pattern of WPC under natural weathering might differ from that of WPC under accelerated weathering, based on laboratory conditions [21,22]; also, a previous study [7] reported on the effect of the type and content of a UV stabilizer on the photostabilization of WPVC composites using a QUV weatherometer only.…”

Section: Introductionmentioning

confidence: 99%

“…Higher temperature was also found to increase the water absorption of WPC [17,18]. Available literature indicates that there is very little information comparing the property changes of WPC under accelerated and natural conditions [21,22]. Abu-Sharkh and Hamid [21] revealed that the photostability of maleic anhydride-grafted polypropylene (MAPP)-compatibilized palm fiber/PP composites under artificial weathering was higher than that under natural weathering.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photodegradation profiles of PVC compound and wood/PVC composites under UV weathering

Chaochanchaikul¹,

Rosarpitak²,

Sombatsompop³

2013

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. This work aimed to study the effect of different ultraviolet (UV) weathering conditions (natural and accelerated) on the photodegradation of polyvinyl chloride (PVC) and wood/polyvinyl chloride (WPVC) composites by considering the structural and physical changes of PVC and WPVC samples as well as examining the photodegradation profiles at different depths from the sample surfaces. The photodegradation of PVC and WPVC composites under natural weathering conditions were lower than those under accelerated weathering conditions. The addition of Tinuvin P stabilizer at 2 phr was sufficient to stabilize PVC and WPVC composites, whereas the presence of wood appeared to accelerate the photodegradation of PVC under both natural and accelerated weathering conditions. When considering the photodegradation profiles at different depths of the samples, it was found that the polyene and carbonyl sequences of PVC and WPVC composites were high at the sample surfaces and tended to decrease rapidly with increasing depth from the specimen surface before stabilizing at a depth of 60 µm for PVC and 80 µm for WPVC composites. The differences in specimen depths for the stabilization of polyene and carbonyl sequences in PVC and WPVC samples implied that the presence of wood particles enhanced the absorption of UV radiation by the WPVC composite samples.

show abstract

Section: Discoloration Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Photodegradation profiles of PVC compound and wood/PVC composites under UV weathering

Chaochanchaikul¹,

Rosarpitak²,

Sombatsompop³

2013

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…65 Mixtures of magnesium and titanium oxide were used for window and door profile production. 72 Oxidation of lignins influenced color change. Wood fillers are used for reinforcement and to lower PVC cost.…”

Section: Fillersmentioning

confidence: 99%

Principles of Uv Degradation

Wypych¹

2015

PVC Degradation and Stabilization

View full text Add to dashboard Cite

“…Adhesively bonded specimens are influenced by many factors, with the most important factors being the combining action of humidity and heat [10][11][12][13]. With this in mind, the bonded specimens, in this work, were treated in accordance with test method for bonding strength as given in the Chinese standard GB/T17657 (test methods of evaluating the properties of wood-based panels and surface-decorated wood-based panels) before testing compression shear strengths.…”

Section: Determination Of Wet Compression Shear Strengthmentioning

confidence: 99%

Study on bonding properties of PVC-based WPC bonded with acrylic adhesive

Cheng

Zhang

2012

Journal of Adhesion Science and Technology

View full text Add to dashboard Cite

In this paper, the bonding properties of polyvinylchloride (PVC)-based wood-plastic composite (WPC) materials bonded with acrylic adhesive have been studied. The results showed that dry compression shear strength of bonded specimens glued with acrylic adhesive was 6.12 MPa, and reached 58.8% of the strength of the PVC-based WPCs. The results also showed that wet compression shear strength in accordance with Chinese standard GB/T17657 was 0.9 times the dry compression shear strength of 5.48 MPa. In addition, the retention rate of the compression shear strength of the bonded specimens gluing with acrylic adhesive after UV aging for 7 days and 14 days was 69.1 and 66.8%, respectively. The aging was done in accordance with UV-aging test process as given in this paper. The scanning electron microscopy (SEM) analysis of the bonded specimens of PVCbased WPCs showed that the J-39 acrylic adhesive penetrated into the adjacent porous regions of the PVC-based WPC which had resulted from foaming. This penetration enhanced the mechanical interlocking between the substrate and the acrylic adhesive.

show abstract

Physical Morphology and Quantitative Characterization of Chemical Changes of Weathered PVC/Pine Composites

Cited by 25 publications

References 19 publications

Photodegradation profiles of PVC compound and wood/PVC composites under UV weathering

Photodegradation profiles of PVC compound and wood/PVC composites under UV weathering

Principles of Uv Degradation

Study on bonding properties of PVC-based WPC bonded with acrylic adhesive

Contact Info

Product

Resources

About