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¿µÁøÄÚÆÛ·¹ÀÌ¼Ç Á¾ÇÕÄ«´Ù·Î±× |
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2000³â ù °³ÃÖµÈ ÀÌÈÄ 3³â¸¶´Ù ¾Æ½Ã¾Æ °¢ ±¹°¡¿¡¼ ¼øȸ °³Ãֵǰí ÀÖ´Â APT (Asian Particle Technology) Symposium Àº
¾Æ½Ã¾Æ °¢ ±¹°¡ÀÇ particle °ü·Ã ¿¬±¸ÀεéÀÌ ¸ð¿©
particle preparation and design, indusrial and engineering applications, analysis of particle behavoir and performances,
modeling and simulations, particle-fluid systems, powder metallurgy, mineral processing, particles for nanotechnology,
biological and pharmaceutical particles, cements, paints and pigments, fertilizers µîÀÇ ºÐ¾ß¿¡ ´ëÇÑ »õ·Î¿î ±â¼ú°ú ¿¬±¸°á°ú¸¦
¹ßÇ¥ÇÏ´Â ½ÉÆ÷Áö¿òÀÔ´Ï´Ù. |
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2000 : Thailand 2003 : Malaysia 2006 : China 2009 : India 2012 : Singapore 2015 : Seoul |
ÀÏ ½Ã : |
15 - 18 Sep. , 2015 |
Àå ¼Ò : |
COEX, Seoul |
Site : |
www.apt2015.org |
ÁÖ ÃÖ : |
Çѱ¹ÈÇаøÇÐȸ ¹Ì¸³ÀÚ°øÇÐ ºÎ¹®À§¿øȸ |
ÈÄ ¿ø : |
¼¿ï½Ã |
APT 2015 ¾È³»¹® ´Ù¿î·Îµå |
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Subject 1 : |
New insight into concentrated micro- and nanodispersions by X-ray concentration profiling |
Session : |
[OP05] Other topics related with particle technology-1 |
Time : |
11:50 - 12:05 (Wed) Sep. 16, 2015 |
Location : |
Conference Room (South) 307B |
Abstract : |
Characterization of dispersions, e.g. regarding separation phenomena (stability) and homogeneity
is problematic for concentrated nontransparent dispersions but also transparent nanodispersions.
This applies even more in case of complex mixtures, when the dispersed phase is a mixture of two
or more materials. In particular it is difficult to define a separation level and to quantify differences
in solids concentration inside the sample. To overcome these difficulties a new analytical
instrument - the LUMiReader X-Ray - has been developed. The working principle is based on
measurement of space and time resolved X-ray transmission profiles over the entire sample height.
In contrast to optical measurements X-ray transmits very highly concentrated dispersions, powders
and composite materials. Recorded X-ray intensities depend only on mass concentration of particles
and do not depend on particle size and shape. The new approach can be easily applied to detect
inhomogeneities e.g. in mortars and creams or after dispersing particles in liquids or polymers.
On the other hand kinetics of separation phenomena at earth gravity as well as in combination
with analytical centrifugation can be analyzed and local sediment packing studied (see figure left .
concentration profiles inside flocculated lime sediments as function of relative centrifugal force
applied). Segregation results for dispersions made of mixtures of different materials (different
X-ray absorption properties), like dispersions in paper industry and colour cosmetics, will be also
presented (see figure right - dark blue nail varnish sample after 2 hours centrifugation at RCF 2300.
photo and extinction profile . pigment segregation detectable by X-ray).   ÃÊ·Ï ´Ù¿î·Îµå |
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Subject 2 : |
Characterization of dispersibility and dispersion quality |
Session : |
[OP15] Process analytical technologies, particle characterization and monitoring-1 |
Time : |
17:15 - 17:30 (Wed) Sep. 16, 2015 |
Location : |
Conference Room (South) 307B |
Abstract : |
To make an economic use of raw materials in suspension based formulations one has to obtain
a high degree of dispersion. This is related also to practical aspects like achieving high hiding
power at lower pigment concentration and of outstanding material properties in composites.
Dispersibility and the resulting quality of dispersion are determined by several factors including
structure/quality of the raw materials and dispersion media, dispersion process and additives,
which have to be characterized and quantified. Regarding selection of dispersion media and
additives determination of Hansen solubility parameters (HSP¡¯s) can be used as a guide to reduce
trial and error. A multisample analytical centrifugation technique with photometric detection
(LUMiSizer, LUM, Germany) is used in this study for instrumented evaluation of dispersibility and
dispersion quality as well as for determination of HSP for pigments. Multisample analytical
centrifugation approach enables the direct determination of dispersion stability at original
concentration. Even more information about dispersion structure (e.g. flocculation state) is
obtained. A dispersibility index is proposed for characterization of the materials to be dispersed.
A broad range of examples is given ranging from pigment dispersions (see example below for
different batches of a pigment paste), over pharmaceutical applications to high tech material like
graphene and carbon nanotubes. Determination of the HSP for pigments is exemplified using
the multisample capability of the instrument.   ÃÊ·Ï ´Ù¿î·Îµå |
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1994³â, Suspension°ú Emulsion ºÐ¾ßÀÇ ¹ßÀüÀ» À§ÇØ Çõ½ÅÀûÀÎ Àåºñ¸¦ °³¹ßÇÏ°Ú´Ù´Â ¸ñÇ¥·Î LUM GmbH ¼³¸³ |
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Dispersion Analysis, Colloid Chemistry, Blood Rheology and Fluid Dynamics ºÐ¾ß Àú³Î¿¡ 250Æí ÀÌ»óÀÇ ³í¹®, article ¹ßÇ¥ |
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ISO ȸ¿øÀ̸ç, Particle Characterization ÀÇ working group 2 (sedimentation methods) ¿Í working group 16 (stability)ÀÇ ÀÇÀå |
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±¹Á¦ÇмúÁö Biorheology (IOS ÃâÆÇ)ÀÇ ÆíÁýÀ§¿øȸ ȸ¿ø |
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Particle Measurement Technology, Fluid Separation and Rheology ÀÇ German national VCI committees ȸ¿ø |
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ÇÐ   ·Â |
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úÞ µ¶ÀÏ º£¸¦¸° Humboldt University ÀÇÇй°¸® ¹× »ý¹°¹°¸®ÇÐ ÀüÀÓ±³¼ö |
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îñ µ¶ÀÏ º£¸¦¸° Humboldt University ÀÇ°ú´ëÇÐ ÀÇÇй°¸® ¹× »ý¹°¹°¸®ÇаúÀå |
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µ¶ÀÏ º£¸¦¸° Humboldt University »ý¹°¹°¸®ÇÐ ¹Ú»ç Ãëµæ |
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·¯½Ã¾Æ ¸ð½ºÅ©¹Ù Lomonossow University Á¹¾÷ |
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¼ö»ó³»¿ª |
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Biophysical Society of Shanghai (Áß±¹) ¸í¿¹È¸¿ø»ó |
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Int. Society of Filtration (¿µ±¹) ±Ý¸Þ´Þ |
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2012 of Berlin_Brandenburg (µ¶ÀÏ) Çõ½Å»ó |
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