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10.9767-bcrec.14.1.3328.165-172 |
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|a Intercalations and Characterization of Zinc/Aluminium Layered Double Hydroxide-Cinnamic Acid
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|c 2019
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|a cinnamic acid
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|a CONTROLLED-RELEASE
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|a co-precipitation
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|a DELIVERY-SYSTEM
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|a HYDROTALCITE
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|a intercalation
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|a Layered double hydroxide
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|a NANOHYBRID
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|a REMOVAL
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|a sunscreen agent
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|z View Fulltext in Publisher
|u https://doi.org/10.9767/bcrec.14.1.3328.165-172
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|a Cinnamic acid (CA) is known to lose its definite function by forming into radicals that able to penetrate into the skin and lead to health issues. Incorporating CA into zinc/aluminum-layered double hydroxides (Zn/Al-LDH) able to reduce photodegradation and eliminate close contact between skin and CA. Co-precipitation or direct method used by using zinc nitrate hexahydrate and aluminium nitrate nonahydrate as starting precursors with addition of various concentration of CA. The pH were kept constant at 7 +/- 0.5. Fourier Transform Infrared-Attenuated Total Reflectance (FTIR-ATR) shows the presence of nanocomposites peak 3381 cm(-1) for OH group, 1641 cm(-1) for C=O group, 1543 cm(-1) for C=C group and 1206 cm-1 for C-O group and disappearance of N-O peak at 1352 cm(-1) indicates that cinnamic acid were intercalated in between the layered structures. Powder X-Ray Diffraction (PXRD) analysis for Zn/Al-LDH show the basal spacing of 9.0. indicates the presence of nitrate and increases to 18.0. in basal spacing in 0.4M Zn/Al-LDH-CA. CHNS analysis stated that 40 % of cinnamic acid were being found and intercalated in between the interlayer region of the Zn/Al-LDH with higher thermal stability. Field Emission Scanning Electron Microscope (FESEM) images of 0.4 M Zn/Al-LDH-CA shows that the nanocomposites are in more compact, flaky non porous, large agglomerates with smooth the surfaces of the intercalated compound. Controlled release was successful with 80 % release in phosphite anion and 70 % release carbonate anion. The cinnamic acid was successfully inserted between the interlayer regions of Zn/Al-LDH with slow release formulation. Copyright (c) 2019 BCREC Group. All rights reserved
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|a Adam, N
|e author
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|a Dzulkifli, NN
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|a Ghazali, SAISM
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|a Hak, CRC
|e author
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|a Sarijo, SH
|e author
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|t BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS
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