ICCAS OpenIR
Temperature and Relative Humidity Dependency of Film Formation of Polymeric Latex Dispersions
Chen, Xuelian; Fischer, Stefan; Men, Yongfeng
2011-11-01
Source PublicationLANGMUIR
ISSN0743-7463
Volume27Issue:21Pages:12807-12814
AbstractThermogravimetric analysis and a synchrotron small-angle X-ray scattering technique were employed to characterize the structural evolution of a polymeric latex dispersion during the first three stages of film formation at different temperatures and relative humidities. Three intermediate stages were identified: (1) stage I*, (2) stage I**, and (3) stage II*. Stage I* is intermediate to the conventionally defined stages I and II, where latex particles began to crystallization. The change of drying temperature affects the location of the onset of ordering, whereas relative humidity does not. Stage I** is where the latex particles with their diffuse shell of counterions in the fcc structure are in contact with each other. The overlapping of these layers results in an acceleration of the lattice shrinkage due to a decrease of effective charges. Stage II* is where the latex particles, dried well above their T-g, are deformed and packed only partially during film formation due to incomplete evaporation of water in the latex film. This is because of a rapid deformation of the soft latex particles at the liquid/air interface so that a certain amount of water is unable to evaporate from the latex film effectively. For a latex dispersion dried at a temperature close to its minimum film formation temperature, the transition between stages II and III can be continuous because the latex particles deform at a much slower rate, providing sufficient surface area for water evaporation.
DOI10.1021/la202300p
Indexed BySCI
Language英语
WOS IDWOS:000296211800007
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71990
Collection中国科学院化学研究所
Corresponding AuthorMen, Yongfeng
AffiliationChinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Chen, Xuelian,Fischer, Stefan,Men, Yongfeng. Temperature and Relative Humidity Dependency of Film Formation of Polymeric Latex Dispersions[J]. LANGMUIR,2011,27(21):12807-12814.
APA Chen, Xuelian,Fischer, Stefan,&Men, Yongfeng.(2011).Temperature and Relative Humidity Dependency of Film Formation of Polymeric Latex Dispersions.LANGMUIR,27(21),12807-12814.
MLA Chen, Xuelian,et al."Temperature and Relative Humidity Dependency of Film Formation of Polymeric Latex Dispersions".LANGMUIR 27.21(2011):12807-12814.
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