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    <pre style="white-space:pre-line"><code>ÃœrÃ¼n TanÄ±tÄ±mÄ± / Product Advertorial

Yazar / Author: Paolo Siragusa                                   Derleyen / Editor: Dilek SamancÄ±oÄŸlu

            Ar-Ge & Teknik Destek MÃ¼dÃ¼rÃ¼                                                       Ä°ÅŸ GeliÅŸtirme & Pazarlama
  R&D and Technical Assistance Manager                                            Business Development & Marketing

     Res Pharma Industriale â€“ Ä°talya / Italy                                                    Novodist DÄ±ÅŸ Tic. Ltd. Åti.

                                                                  DoÄŸru EmÃ¼lgatÃ¶r NasÄ±l SeÃ§ilir?

                                                                 How to Choose the Right Emulsifier?

Kozmetik Ã¼rÃ¼nlerin %70â€™inden fazlasÄ± emÃ¼lsiyon olup              More than 70% of cosmetic products are emulsions and
emÃ¼lsifiye etme, yÃ¼zey aktif fonksiyonlarÄ±nÄ±n en karmaÅŸÄ±ÄŸÄ±-      emulsifying property is the most complex of the surfac-
dÄ±r. YapÄ±lan son araÅŸtÄ±rmalar, krem veya losyonun genel es-      tant functions. Recent research indicates strongly that
tetiÄŸinde emÃ¼lgatÃ¶rÃ¼n ve emÃ¼lsiyon dengeleyicisinin bÃ¼-          the selection of emulsifier and emulsion stabilizer is of
yÃ¼k Ã¶nem arz ettiÄŸini iÅŸaret etmektedir.1 Bir emÃ¼lsiyon for-     great importance to the overall aesthetics of a cream or
mÃ¼le edilirken birÃ§ok aÅŸamadan geÃ§er. YÃ¼z, eller ve vÃ¼cut        lotion.1Much work is involved in formulating an emulsion.
iÃ§in yÃ¼ksek deÄŸerli sistemlerin oluÅŸmasÄ±nda yÃ¼zey aktifler       Surfactants play a key role in the two main steps involved
iki ana aÅŸamada bÃ¼yÃ¼k rol alÄ±rlar.                               making these high value systems for face, hands and body.
KiÅŸisel bakÄ±m Ã¼rÃ¼nlerine yÃ¶nelik emÃ¼lsiyonlarda dÃ¶rt temel       There are four main stabilization mechanisms used to pro-
stabilizasyon mekanizmasÄ± kullanÄ±lmaktadÄ±r:                      duce personal care emulsions:

                1) YÃ¼klÃ¼ veya iyonik stabilizasyon2                           2) Non-iyonik veya sterik stabilizasyon3
          1) The first is charge, or ionic stabilization2              2) The second is nonionic, or steric stabilization3

                 Åek. 1: Elektrostatik stabilizasyon                                  Åek. 2: Sterik stabilizasyon
                  Fig. 1: Electrostatic stabilization                                  Fig. 2: Steric stabilization
3) SÄ±vÄ± kristal katmanlÄ± fazlarÄ±nÄ±n oluÅŸumuna dayalÄ± stabili-    3) The third is stabilization based on the formation of liquid
zasyon                                                           crystalline lamellar phases
4) Polimerik stabilizasyon                                       4) The last but not least is polymeric stabilization
                                                                 Each places different demands on surfactants, and requires
Her biri yÃ¼zey aktif Ã¼zerinde farklÄ± ihtiyaÃ§larÄ± tayin eder ve   different formulation and manufacturing methods. Each has
farklÄ± formÃ¼lasyon ve Ã¼retim teknikleri gerektirir. Her birinin  advantages and disadvantages, and is seldom used alone.
aynÄ± zamanda avantajlarÄ± ve dezavantajlarÄ± vardÄ±r ve nadi-
ren tek baÅŸÄ±na kullanÄ±lÄ±r.

38 Ocak - January / Åubat - February 2016</code></pre>
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