About Johan
Johan received his BS in chemistry/chemical engineering at the Hoogeschool Eindhoven in The Netherlands where he synthesized various types of liquid crystalline copolymers for chromatographic separation.
Next, he moved to San Diego State University where he synthesized liquid crystalline polysiloxanes and subsequently covalently bound these polymers to silica surfaces to be used as stationary phases for chromatography. A project with Prof. Richard Laub and Prof. George Janini.
After receiving his MS in physical/analytical chemistry he started his PhD at the University North Carolina at Chapel Hill with Prof. Edward Samulski where he studied conformational and orientational changes during phase transitions of liquid crystal polymers and lyotropic liquid crystalline solutions using NMR.
Following his PhD degree Johan worked as a product development manager at P&G's European Technical Center in Brussels. Next, he worked as a research manager at National Starch and Chemical Company (under Unilever/ICI) on many projects involving structure-property-performance relationships of polymers and colloids in products ranging from personal care to building materials.
In 2002, Johan joined International Flavors and Fragrances (IFF) where he was responsible for: (i) engineering and development of new delivery systems for fragrances, (ii) development of malodor control technologies, (iii) development of electronic dosage devices and lab automation, and (iv) method development and exploration of microcapsule and fragrance performance insights using modeling and informatics.
In 2017 he accepted the position of Research Director for Global Home Cleaning Research, Development and Engineering at S.C. Johnson where he was responsible for Technology Strategy Road Mapping as well as providing scientific support for claim substantiation.
In May 2018, Johan has started Pluyter Consulting in order to focus on providing scientific and technology development support for small and large companies.
Further details of Johan's professional background can be found on his linked-in page:
https://www.linkedin.com/in/johan-pluyter-7358526/
Expertise Areas
Patents and Patent Applications
Click HERE for Johan's Patents and Patent Applications by Technology Type.
- Encapsulation / Targeted Delivery of Fragrances
- For products such as fabric softeners, powder/liquid detergents, shampoo/conditioner and personal wash
- Polymer chemistry development for specific core/active that is to be delivered
- Optimization of microcapsule deposition through delivery system technology development as a well as through consumer product formulation
- Polymer design for minimized in-product encapsulate leakage and targeted release behavior during product use
- Electronic delivery devices (i.e. air care)
- New Cleaning Product Development
- Fabric softeners
- Powder and liquid detergents
- Liquid and auto-dish detergents.
- Home care: hard surface cleaners (bath, kitchen, floor, glass), and toilet cleaners
- Product Understanding and New Material/Product Innovation
- Develop structure/formulation - property - product performance correlations for polymer additives in various applications:
- Hair fixatives and conditioning products
- Skin care products
- Detergents
- Industrial: Adhesives, paints, non-wovens, cement and paper products
- Understanding how and to what extent combinations of test variables, physical properties and process variables impact a product's in-use behavior
- Develop structure/formulation - property - product performance correlations for polymer additives in various applications:
- Polymers
- Polymers and liquid crystal polymers for specific and optimized chromatographic separations
- Molecular design and understanding of polymers for various applications (see above)
- Polymer and liquid crystal polymer phase behavior
- Technology Roadmapping and Claim Substantiation
- Patent Analysis and Writing
Examples of Previous Research Projects
- Development of Artificial Peroxidase Type Systems for Dye-Transfer Inhibition
- Patent Application: https://patents.google.com/patent/MX9603972A/en?inventor=Pluyter&oq=Pluyter&page=5
- Related publication: https://pubs.rsc.org/en/content/articlehtml/1997/cc/a705934e
- Patent Application: https://patents.google.com/patent/MX9603972A/en?inventor=Pluyter&oq=Pluyter&page=5
- Block Copolymers for Improved Viscosity Stability in Concentrated Fabric Softeners
- Development of New Polymers for Low VOC Hair Spray Fixatives and Physical Properties Required
- Publication: Gormley JL, Martino GT, Pluyter JGL, Tong QK. Using physical measurements to optimise water-containing aerosol hair sprays. Cosmet Toilet Manf World 1997; 209–216.
- Example of methods used: https://www.sanyo-si.com/wp-content/uploads/kruss-ar228-en.pdf
- More examples of methods used: https://library.scconline.org/v049n01/57
- Understanding Wet Tack Development in Coatings on Porous Surfaces (Adhesives, Paints) with Prof. William Russel.
- Project conceived and managed by me until I changed companies.
- Measuring the “tack” of waterborne adhesives: https://pubs.aip.org/sor/jor/article-abstract/47/6/1399/239796/Measuring-the-tack-of-waterborne-adhesives?redirectedFrom=PDF
- On the measurement of “tack” for adhesives: Tirumkudulu et al. Phys. Fluids 15(6), 1588–1605 (2003)
- Neutron Scattering Studies for Fragrance-Surfactant Interactions (with NIST)
- News Release: https://www.eurekalert.org/news-releases/484056
- Encapsulated Active Materials Containing Adjunct Crosslinkers
- Development of Cross-Linked Polyamine-Based Microcapsules
- Development of Formaldehyde Control Technologies in Aminoplast Microcapsules
- Profragrance Development
Selected Unpublished Research Projects
- Modeling cleaning mechanisms during dishwashing
- Modeling color development and dye-transfer inhibition during multiple washes with white and colored articles
- Development of new polymers for low VOC hair fixatives
- Understanding key performance criteria for new polymers in low VOC formulations
- Understanding and modeling of hair network formation by hair fixatives sprays
- Measuring tack development during drying of emulsion polymer based coatings on porous surfaces
- Fluid dynamics modeling of roll-coating of emulsion polymer based coatings on porous surfaces
- Polymer development for cement tile adhesives
- Physical property measurements during cement setting (water activity, rheology, crystallization)
- Polymer complexes for wet strength improvement in paper making
- Development of anti-wrinkle technologies in fabric care
- Understanding formation of wrinkles and its key criteria
- Modeling interactions of anti-wrinkle actives with fabric softener ingredients
- Characterization and quantitative fractionation by degree of hydrolysis and molecular weight of commercial polyvinyl alcohols and polyvinyl alcohols extracted from emulsion polymers
- Mesocale modeling of impact of polyvinyl alcohol microstructure on vinyl acetate emulsion stability
- Molecular modeling of surface adhesion of deposition polymers for microcapsules
- Mechanical properties of microcapsules