Abstract
Cashew nut shell liquid (CNSL) is a byproduct of the cashew nut industry and consists predominantly of phenolic compounds that have an side chain with different degrees of unsaturation. Cardanol, one of these components, is biodegradable and widely available. Studies have revealed several polymerization reactions involving cardanol. However, the mechanisms and detailed structures of polymerization reactions have not been explored, although the final product shows different applications. In this work, we evaluated the mechanism and the products structure of the reaction of cardanol with: (i) boron trifluoride diethyl etherate (BF3O(CH2CH3)2), and (ii) formaldehyde. The characterizations were performed by FTIR, 1H NMR, SEC and TGA. The results show that the reaction of cardanol with aldehyde produces the expected like-comb structure with a long hydrocarbon pendent chain. Nevertheless, the reaction of cardanol with BF3O(CH2CH3)2 can exhibits a more complex structure since it was identified aromatic ring linkages, besides the expected polymerization through C=C.
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Voirin C, Caillol S, Sadavarte NV, Tawade BV, Boutevin B, Wadgaonkar PP (2014) Polym Chem 5:3142.
Lima AF, Mansur CRE, Lucas EF, González G (2010) Energy Fuels 24:2369
Ferreira SR, Louzada HF, Dip RMM, González G, Lucas EF (2015) Energy Fuels 29:7213
Zhou Q, Cho D, Ho Park W, Keun Song B, Kim H-J (2011) J Appl Polym Sci 122:2774
Ionescu M, Wan X, Bilić N, Petrović ZS (2012) J Polym Environ 20:647
Souza FG, Pinto JC, Rodrigues MV, Anzai TK, Richa P, Melo PA, Nele M, Oliveira GE, Soares BG (2008) Polym Eng Sci 48:1947
Sakulsaknimitr W, Wirasate S, Pipatpanyanugoon K, Atorngitjawat P (2015) J Polym Environ 23:216
Moreira LFB, Lucas EF, González G (1999) J Appl Polym Sci 73:29
Rios Façanha MA, Mazzetto SE, Beserra Carioca JO, de Barros GG (2007) Fuel 86:2416
Antony R, Pillai CKS, Scariah KJ (1990) J Appl Polym Sci 41:1765
Devi A, Srivastava D (2006) J Appl Polym Sci 102:2730
Sood SK, Tyman JHP, Durrani A, Johnson RA (1986) Lipids 21:241
Rodrigues FHA, Souza RJR, França FCF, Nágila MPSR, Judith PAFE (2006) Polymers 6:1027
Kim YH, Won K, Kwon JM, Jeong HS, Park SY, An ES, Song BK (2005) J Mol Catal B 34:33
Rao BS, Palanisamy A (2013) Eur Polym J 49:2365
Kiratitanavit W, Ravichandran S, Xia Z, Kumar J, Nagarajan R (2013) J Renew Mat 1:289
Bai W, Xiao X, Chen Q, Xu Y, Zheng S, Lin J (2012) Prog Org Coat 75:184
Cheremisinoff NP (1997).) Handbook of Engineering polymeric materials. CRC Press, New York
Chuayjuljit S, Rattanametangkool P, Potiyaraj P (2007) J Appl Polym Sci 104:1997
Yadav R, Srivastava D (2007) Mater Chem Phys 106:74
Srivastava R, Srivastava D (2015) J Polym Environ 23:283
Lubi MC, Thachil ET (2000) Des Monomers Polym 3:123
Natarajan M, Murugavel SC (2013) High Perform Polym 25:685
Sultania M, Rai JSP, Srivastava D (2010) Eur Polym J 46:2019
Shibata M, Itakura Y, Watanabe H (2013) Polym J 45:758
Kim YH, An ES, Park SY, Song BK (2007) J Mol Catal B 45:39
Bruice PY (2004) Organic chemistry. Pearson/Prentice Hall, New Jersey
Ravichandran S, Bouldin RM, Kumar J, Nagarajan R (2011) J Clean Prod 19:454
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We thank CAPES, CNPq and FAPERJ for financial support.
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Loureiro, T., Dip, R.M.M., Lucas, E. et al. Cardanol Polymerization Under Acid Conditions By Addition And Condensation Reactions. J Polym Environ 26, 555–566 (2018). https://doi.org/10.1007/s10924-017-0969-6
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DOI: https://doi.org/10.1007/s10924-017-0969-6