Decay resistance and thermal stability of bamboo preservatives prepared using camphor leaf extract

Abstract Because bamboo is attacked by many fungi, bamboo products should be protected with environmentally friendly plant-based preservatives. In this study, a camphor ( Cinnamomum camphor (L.) Presl ) leaf extract was mixed with a melamine-modified urea formaldehyde (MUF) resin prepolymer (10% extractive + 10% MUF), and the resulting preservative compound (CEMUF) was collected. Bamboo was treated with CEMUF, camphor leaf extract (CE, 10% extractive), and distilled water, respectively. The decay resistance of treated bamboo and the heat resistance of CE, CEMUF, and MUF were investigated by thermogravimetry. The dynamic parameters of samples at each reaction stage were calculated using the pyrolysis dynamic equation to obtain the activation energy E . The results revealed that abundant microspheres were present in the parenchyma cells around the vascular bundles of bamboo after treatment with CEMUF and that this benefitted the controlled release of the active composition. Compared to the control group, the bamboo treated with CE exhibited some decay resistance, and bamboo treated with CEMUF exhibited strong decay resistance. The order of heat resistance was as follows: MUF > CEMUF >> CE. These results demonstrate the usefulness of CEMUF as a bamboo preservative.

[1]  Wang Su,et al.  Thermal Decomposition Kinetic Model of Phenolic Resin , 2008 .

[2]  Md. Iftekhar Shams,et al.  Protective antifungal effect of neem (Azadirachta indica) extracts on mango (Mangifera indica) and rain tree (Albizia saman) wood , 2009 .

[3]  Seung‐Hwan Lee,et al.  Adhesive penetration of wood cell walls investigated by scanning thermal microscopy (SThM) , 2007 .

[4]  H Schmutterer,et al.  Properties and potential of natural pesticides from the neem tree, Azadirachta indica. , 1990, Annual review of entomology.

[5]  F. Kamke,et al.  Penetration of Liquid Urea-Formaldehyde Adhesive into Beech Wood , 2007 .

[6]  He Wei,et al.  Study on Chemical Constituents of the Essential Oil and Classification of Types from Cinnamomum camphora , 1989 .

[7]  Jian Li,et al.  Improvement of decay resistance of wood via combination treatment on wood cell wall: Swell-bonding with maleic anhydride and graft copolymerization with glycidyl methacrylate and methyl methacrylate , 2011 .

[8]  C. Mai,et al.  Modification of wood with silicon compounds. Treatment systems based on organic silicon compounds — a review , 2004, Wood Science and Technology.

[9]  R. Farnood,et al.  Preparation and characterization of ethyl cellulose-based core–shell microcapsules containing plant oils , 2012 .

[10]  Christine Baudasse,et al.  Potentiality of use extracts from Tetraclinis articulata like biocide against wood destroying organisms: Reticulitermes santonensis , 2007 .

[11]  Li Yuan,et al.  Preparation and characterization of poly(urea-formaldehyde) microcapsules filled with epoxy resins , 2006 .

[12]  Walter Liese,et al.  Bamboo and Rattan in the World , 2003 .

[13]  W. Gindl,et al.  Tensile shear strength of UF- and MUF-bonded veneer related to data of adhesives and cell walls measured by nanoindentation , 2010 .

[14]  Xiang Shi-long.  Study on pyrogenation characteristics and thermodynamics of cork , 2010 .

[15]  G. R. Williams,et al.  An investigation of cell wall micropore blocking as a possible mechanism for the decay resistance of anhydride modified wood , 2005 .

[16]  M. Hale,et al.  Wood : decay, pests, and protection , 1993 .

[17]  M. Freeman,et al.  Nonarsenical Wood Protection: Alternatives for Chromated Copper Arsenate, Creosote and Pentachlorophenol , 2006 .

[18]  A. Preston,et al.  A brief review of the past, present and future of wood preservation. , 2007, Pest management science.

[19]  A. Mishra,et al.  Repellent and insecticidal activities of essential oils from Artemisia princeps and Cinnamomum camphora and their effect on seed germination of wheat and broad bean. , 2006, Bioresource technology.

[20]  Julia K. Hasty,et al.  Developing environmentally benign and effective organic wood preservatives by understanding the biocidal and non-biocidal properties of extractives in naturally durable heartwood , 2008 .