The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and properties
In this work, a novel bio-renewable castor oil (CO) based aqueous polyurethane (PU) anionic prepolymer dispersion was prepared successfully using isophorone diisocyanate (IPDI) and dimethylol propionic acid (DMPA) as internal emulsifier maintaining NCO/OH molar ratios of 1:3 and 1:5, respectively. T...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2017-05-01
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| Series: | Green Processing and Synthesis |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/gps-2016-0144 |
| _version_ | 1818907733639823360 |
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| author | Panda Siva Sankar Panda Bishnu Prasad Mohanty Smita Nayak Sanjay K. |
| author_facet | Panda Siva Sankar Panda Bishnu Prasad Mohanty Smita Nayak Sanjay K. |
| author_sort | Panda Siva Sankar |
| collection | DOAJ |
| description | In this work, a novel bio-renewable castor oil (CO) based aqueous polyurethane (PU) anionic prepolymer dispersion was prepared successfully using isophorone diisocyanate (IPDI) and dimethylol propionic acid (DMPA) as internal emulsifier maintaining NCO/OH molar ratios of 1:3 and 1:5, respectively. The intermolecular H-bonding change, type and intensity of the obtained films with change in molar ratio were investigated by analyzing with Fourier transform-infrared (FT-IR). The morphology of the films was recorded with scanning electron microscopy (SEM) and transmittance electron microscopy (TEM). The coating properties for the film were also studied and discussed. The structure-property relationship with different molar ratios of prepolymer revealed an increasing pattern showing increase in the hard segment content increases the physico-mechanical properties of the CO based PU prepolymer. The FT-IR deconvolution results are in agreement with the film properties. The excellent abrasion resistance properties of CO based films agree well with the surface morphology and FT-IR results. The outcome of the study also suggests use of CO as a better alternative to replace petroleum based polyol for feature perspective. |
| first_indexed | 2024-12-19T21:59:49Z |
| format | Article |
| id | doaj.art-cbef452fd4184e12b4d44386f03add1e |
| institution | Directory Open Access Journal |
| issn | 2191-9542 2191-9550 |
| language | English |
| last_indexed | 2024-12-19T21:59:49Z |
| publishDate | 2017-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Green Processing and Synthesis |
| spelling | doaj.art-cbef452fd4184e12b4d44386f03add1e2022-12-21T20:04:11ZengDe GruyterGreen Processing and Synthesis2191-95422191-95502017-05-016334135110.1515/gps-2016-0144The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and propertiesPanda Siva Sankar0Panda Bishnu Prasad1Mohanty Smita2Nayak Sanjay K.3Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar, 751024, IndiaLaboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar, 751024, IndiaLaboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Bhubaneswar, 751024, IndiaLaboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Plastics Engineering and Technology, Chennai, 600032, IndiaIn this work, a novel bio-renewable castor oil (CO) based aqueous polyurethane (PU) anionic prepolymer dispersion was prepared successfully using isophorone diisocyanate (IPDI) and dimethylol propionic acid (DMPA) as internal emulsifier maintaining NCO/OH molar ratios of 1:3 and 1:5, respectively. The intermolecular H-bonding change, type and intensity of the obtained films with change in molar ratio were investigated by analyzing with Fourier transform-infrared (FT-IR). The morphology of the films was recorded with scanning electron microscopy (SEM) and transmittance electron microscopy (TEM). The coating properties for the film were also studied and discussed. The structure-property relationship with different molar ratios of prepolymer revealed an increasing pattern showing increase in the hard segment content increases the physico-mechanical properties of the CO based PU prepolymer. The FT-IR deconvolution results are in agreement with the film properties. The excellent abrasion resistance properties of CO based films agree well with the surface morphology and FT-IR results. The outcome of the study also suggests use of CO as a better alternative to replace petroleum based polyol for feature perspective.https://doi.org/10.1515/gps-2016-0144bio-based polyurethane dispersioncoating propertiesft-irpolyurethane prepolymersem |
| spellingShingle | Panda Siva Sankar Panda Bishnu Prasad Mohanty Smita Nayak Sanjay K. The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and properties Green Processing and Synthesis bio-based polyurethane dispersion coating properties ft-ir polyurethane prepolymer sem |
| title | The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and properties |
| title_full | The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and properties |
| title_fullStr | The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and properties |
| title_full_unstemmed | The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and properties |
| title_short | The castor oil based water borne polyurethane dispersion; effect of -NCO/OH content: synthesis, characterization and properties |
| title_sort | castor oil based water borne polyurethane dispersion effect of nco oh content synthesis characterization and properties |
| topic | bio-based polyurethane dispersion coating properties ft-ir polyurethane prepolymer sem |
| url | https://doi.org/10.1515/gps-2016-0144 |
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